AS1974 - austriamicrosystems AG

AS1970 - AS1975

Low-Voltage Single/Dual/Quad Comparators

Data Sheet

www.austriamicrosystems.com Revision 1.02 1 - 18

1 General Description

The AS1970 - AS1975 are single/dual/quad compara-

tors that operate with supplies from 2.5 to 5.5V making

them perfect for all 3- and 5-volt applications. The com-

parators can also operate with dual supplies (±1.25 to

±2.75V), and require very little supply curren t (down to

8.5µA) with minimal propagation delay (300ns).

Low input bias current (1.0pA, typ), low input offset volt-

age (0.5mV, typ), and inte rnal hysteresis (3mV) make

these comparators ideal for low-power single-cell app li-

cations including power-management and power-moni-

toring systems.

The comparators are available as the standard products

listed in Table 1.

The AS1970/AS1972/AS1974 push/pull output can sink

or source current.

The AS1971/AS1973/AS1975 open-drain output can be

pulled beyond VCC to a maximum of 5.5V > VEE. These

open-drain versions are ideal for logic-level tra nslators

or bipolar-to-unipolar converters.

Large internal output drivers allow Rail-to-Rail output

swings with loads of up to 8mA.

The AS1970/AS1971 are available in a 5-pin SOT23

package. The AS1972/AS1973 are available in a 8-pin

MSOP package. The AS1974/AS1975 are available in a

14-pin TSSOP package.

Figure 1. Block Diagrams

2 Key Features

! CMOS Push/Pull Output Sinks and Sources 8mA

(AS1970/AS1972/AS1974)

! CMOS Open-Drain Output V oltage Extends Beyond

VCC (AS1971/AS1973/AS1975)

! Quiescent Supply Current: 8.5µA per Comparator

! Internal Hysteresis: 3mV

! 3V/5V Logic-Level Translation

! Single-Supply Operation: 2.5 to 5.5V

! Common-Mode Input Voltage Range Extends

250mV Above the Rails

! Low Propagation Delay: 300ns

! Minimized Overall Power Consumption

! Supply Current @1MHz Switching Frequency: 80µA

! No Phase Reversal for Overdriven Inputs

! Package Types:

- 5-pin SOT23 – AS1970/AS1971

- 8-pin MSOP – AS1972/AS1973

- 14-pin TSSOP – AS1974/AS1975

3 Applications

The devices are ideal for battery-powered systems,

mobile communication devices, zero-crossing detectors,

window comparators, level translators, threshold detec-

tors/discriminators, ground/supply-sensing applications,

IR receivers or any other space-limited appl ication with

low power-consumption requirements.

Table 1. Standard Products

Model Output Type

AS1970/AS1972/AS1974 Push/Pull

AS1971/AS1973/AS1975 Open-Drain

–

OUTA

INA+

INA-

VEEVCC

OUTD

IND+

IND-

OUTC

INC+

INC-

OUTB

INB+

INB-

AS1974/AS1975

AS1972/AS1973 VEEVCC

INA+

INA- –

OUTA

INB+

INB- –

OUTB

VCC

AS1970/AS1971

VEE

IN+

IN- –

OUT

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AS1970

Data Sheet - Pinout and Packaging

4 Pinout and Packaging

Pin Assignments

Figure 2. Pin Assignments (Top View)

Pin Descriptions

Tabl e 2. Pin Descriptions

Pin Number Pin Name Description

See Figure 2

IN- Comparator Inverting Input

IN+ Comparator Non-Inverting Input

INA- Comparator A Inverting Input

INA+ Comparator A Non-Inverting Input

INB- Comparator B Inverting Input

INB+ Comparator B Non-Inverting Input

INC- Comparator C Inverting Input

INC+ Comparator C Non-Inverting Input

IND- Comparator D Inverting Input

IND+ Comparator D Non-Inverting Input

OUT Comparator Output

OUTA Comparator A Output

OUTB Comparator B Output

OUTC Comparator C Output

OUTD Comparator D Output

VCC Positive Supply Voltage

VEE Negative Supply Voltage

5INB+

7OUTB

6INB-

8VCC

4IN-

5VEE

OUT

VCC

IN+

5-pin SOT23

AS1972/

AS1973

8-pin MSOP

AS1970/

AS1971 AS1974/

AS1975

14-pin TSSOP

VEE

INA+

INA-

OUTA

OUTB

INB-

INB+

VCC

INA+

INA-

OUTA

8OUTC

9INC-

10 INC+

11 VEE

12 IND+

13 IND-

14 OUTD

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AS1970

Data Sheet - Absolute Maximum Ratings

5 Absolute Maximum Ratings

Stresses beyo n d th o s e li st ed in Table 3 may cause permanent damage to the device. These are stress ratings only,

and functional operation of the device at these or any other conditions beyond those indicated in Sectio n 6 Electrical

Characteristics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may

affect device reliability.

Table 3. Absolute Maximum Ratings

Parameter Min Max Units Comments

Supply Voltage VCC to VEE 7V

INx+, INx- to VEE -0.3 VCC

+ 0.3 V

OUTx to VEE AS1970/AS1972/AS1974 -0.3 VCC

+ 0.3 V

AS1971/AS1973/AS1975 -0.3 +7 V

OUTx Short-Circuit Duration to VEE or VCC 10 s

Continuous Power

Dissipation

(TAMB = +70ºC)

5-pin SOT23 571 mW Derate 7.1mW/ºC above +70ºC

8-pin MSOP 727 mW Derate 9.1mW/ºC above +70ºC

14-pin TSSOP 727 mW Derate 9.1mW/ºC above +70ºC

Operating Temperature Range -40 +85 ºC

Junction Temperature Range +150 ºC

Storage Temperature Range -65 +150 ºC

Package Body Temperature 260 ºC

The reflow peak soldering temperature

(body temperature) specified is in

accordance with IPC/JEDEC J-STD-

020C “Moisture/Reflow Sensitivity

Classification for Non-Hermetic Solid

State Surface Mount Devices”.

The lead finish for Pb-free leaded

packages is matte tin (100% Sn).

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AS1970

Data Sheet - Electrical Characteristics

6 Electrical Characteristics

= 2.7 to 5.5V, V

= 0V, V

= 0V, T

AMB

= -40 to +85ºC (unless otherwise specified). Typ values are at T

AMB

= +25ºC.

Tabl e 4. Electrical Characteristics

Symbol Parameter Conditions Min Typ Max Units

VCC Supply Voltage Inferred from PSRR test 2.5 5.5 V

IDD Supply Current

VCC = 5V, No Load, AS1974/AS1975 36 64

µA

VCC = 5V, No Load, AS1972/AS1973 18 32

VCC = 5V, No Load, AS1970, AS1971 11 19

VCC = 2.7V, No Load, AS1974/AS1975 34 60

VCC = 2.7V, No Load, AS1972/AS1973 17 30

VCC = 2.7V, No Load, AS1970, AS1971 10 18

PSRR Power-Supply Rejection Ratio 2.5V ≤ VCC ≤ 5.5V, TAMB = +25ºC 55 80 dB

VCMR Common-Mode Voltage Range 1TAMB = +25ºC VEE

- 0.25 VCC

+ 0.25 V

TAMB = -40 to +85ºC VEE VCC

VOS Input Offset Voltage 2

Full Common-Mode Range,

TAMB = +25ºC ±0.5 ±6 mV

Full Common-Mode Range,

TAMB = -40 to +85ºC ±8

VHYS Input Hysteresis ±3 mV

IB Input Bias Current 3, 4 0.001 10 nA

IOS Input Offset Current 0.5 pA

CIN Input Capacitance 3.5 pF

CMRR Common-Mode Rejection Ratio TAMB = +25ºC 52 80 dB

ILEAK Output Leakage Current AS1971/AS1973/AS1975 only 1.0 µA

ISC Output Short-Circuit Current

Sourcing or Sinking, VOUT = VEE or VCC,

VCC = 5V 60 mA

Sourcing or Sinking, VOUT = VEE or VCC,

VCC = 2.7V 18

VOL OUTx Output Voltage Low

VCC = 5V, ISINK = 8mA,

TAMB = +25ºC 0.2 0.4

VCC = 5V, ISINK = 8mA,

TAMB = -40 to +85ºC 0.55

VCC = 2.7V, ISINK = 3.5mA,

TAMB = +25ºC 0.15 0.3

VCC = 2.7V, ISINK = 3.5mA,

TAMB = -40 to +85ºC 0.4

VOH OUTx Output Voltage High

(AS1970/AS1972/AS1974 onl y)

VCC = 5V, ISINK = 8mA,

TAMB = +25ºC 4.6 4.85

VCC = 5V, ISINK = 8mA,

TAMB = -40 to +85ºC 4.45

VCC = 2.7V, ISINK = 3.5mA,

TAMB = +25ºC 2.4 2.55

VCC = 2.7V, ISINK = 3.5mA,

TAMB = -40 to +85ºC 2.3

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AS1970

Data Sheet - Electrical Characteristics

tRISE OUTx Rise Time

(AS1970/AS1972/AS1974 onl y) VCC = 5V, CLOAD = 15pF 32

nsVCC = 5V, CLOAD = 50pF 50

VCC = 5V, CLOAD = 200pF 80

tFALL OUTx Fall Time

VCC = 5V, CLOAD = 15pF 22

nsVCC = 5V, CLOAD = 50pF 32

VCC = 5V, CLOAD = 200pF 60

tPD-

Propagation Delay

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 10mV Overdrive 400

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 100mV Overdrive 300

AS1971/AS1973/AS1975 only,

CLOAD = 15pF, RPULLUP = 5.1kΩ,

10mV Overdrive 400

AS1971/AS1973/AS1975 only, CLOAD =

15pF, RPULLUP = 5.1kΩ,

100mV Overdrive 300

tPD+

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 10mV Overdrive 420

AS1970/AS1972/AS1974 only,

CLOAD = 15pF, 100mV Overdrive 270

tPU Power-Up T ime 20 µs

1. Inferred from the VOS test. Both or either inputs can be driven 0.3V beyond either supply rail without output

phase reversal.

2. VOS is defined as the center of the hysteresis band at the input.

3. IB is defined as the average of the two input bias currents (IB-, IB+).

4. Guaranteed by design.

Table 4. Electrical Characteristics (Conti nued)

Symbol Parameter Conditions Min Typ Max Units

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AS1970

Data Sheet - Typical Operating Characteristics

7 Typical Operating Characteristics

Figure 3. Supply Current vs. Temperature Figure 4. Supply Current vs. Output Transition

(per comparator) Frequency (per comparator)

Figure 5. VOL vs. ISINK; VIN+ < V IN- Figure 6. VOH vs. ISOURCE ; VIN+ > V IN-

Figure 7. ISINK vs. Temperature Figure 8. VOS vs. Temperature

100

1000

0.1 1 10 100 1000

Output Transition Frequency (kHz)

Supply Current (µA) e

-60 -40 -20 0 20 40 60 80 100

Temp (°C)

Supply Current (µA) e

VCC = 5V

VCC = 3V

VCC = 5V

VCC = 2.7V

0.1

100

1000

0.01 0.1 1 10 100

Output Sink Current (mA)

Output Low Voltage (mV) e

0.1

100

1000

0.01 0.1 1 10 100

Output Source Current (mA)

Output High Voltage (mV) e

VCC = 5V

VCC = 2.7V

VCC = 5V

VCC = 2.7V

100

-60 -40 -20 0 20 40 60 80 100

Temperature (°C)

Output Sink Current (mA) e

2.00

2.10

2.20

2.30

2.40

2.50

2.60

2.70

2.80

2.90

3.00

-60 -40 -20 0 20 40 60 80 100

Temperature (°C)

Offset Voltage (mV) ]

VCC = 5V

VCC = 2.7V

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AS1970

Data Sheet - Typical Operating Characteristics

Figure 9. tPD+ vs. CLOAD; VCC = 3V, VOD = 50mV Figure 10. tPD+ vs. CLOAD; VCC = 5V, VOD = 50mV

Figure 11. tPD+ vs. Temperature; VOD = 50mV Figure 12. tPD+ vs. VOD

Figure 13. 1MHz Response; VOD = 50mV Figure 14. Power-Up Delay; VOD = 50mV

200

250

300

350

400

450

0 200 400 600 800 1000

Capacitive Load (pF)

Propagation Delay t

PD+ (ns) ]

250

300

350

400

450

500

550

0 200 400 600 800 1000

Capacitive Load (pF)

Propagation Delay t

PD+ (ns) ]

To VOUT = 50% of Final Value

To VOUT = 10% of Final Value

To VOUT = 50% of Final Value

To VOUT = 10% of Final Value

200

300

400

500

600

0 40 80 120 160 200

Input Overdrive (mV)

Propagation Delay t

PD+ (ns) ]

240

250

260

270

280

290

-40 -20 0 20 40 60 80 100

Temperature (°C)

Propagation Delay t

PD+ (ns) ]

To VOUT = 50% of Fi na l Valu e

To VOUT = 10% of Final Value VCC = 5V

VCC = 2.7V

Out

400ns/Div

50mV/Div 2V/Div

In+

Out

2V/Div 2V/Div

VCC

4µs/Div

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AS1970

Data Sheet - Typical Operating Characteristics

Figure 15. tPD+; VOD = 50mV Figure 16. tPD-; VOD = 50mV

100ns/Div 100ns/Div

Out

50mV/Div 2V/Div

In+

Out

50mV/Div 2V/Div

In+

www.austriamicrosystems.com Revision 1.02 9 - 18

AS1970

Data Sheet - Detailed Description

8 Detailed Description

The AS1970 - AS1975 are single/dual/quad low-power , comparators. The devices operate with a supply voltage range

between 2.5 and 5.5V while consumi ng down to 8.5µA per comparator. Their common-mode input voltage range

extends 0.25V beyond each rail.

Internal hysteresis ensures clean output switching, even with slow input signals. Large internal output drivers allow rail-

to-rail output swing with up to 8mA loads.

The output stage design minimizes supply-current surges while switching, virtually eliminating the power supply tran-

sients typical. The AS1970/AS1972/AS1974 push/pull output stage sinks and sources current, wheras the AS1971 /

AS1973/AS1975 open-drain output stage can be pulled beyond VCC to an absolute maximum of 5.5V > VEE.

Input Stage

The input common-mode voltage range extends from -0.25V to (VCC + 0.25V), and the co mparators can operate at

any differential input voltage within this voltage range. Input bias (IB) current is 1.0pA (typ) if the input voltage is within

the common-mode voltage range.

Inputs are protected from over-voltage by internal ESD protection diodes connected to the supply rails. As the input

voltage exceeds the supply rails, these diodes become forward biased and begin to conduct and the bias currents

increase exponentially as the input voltage exceeds the supply rails.

Output Stage

The push/pull and open-drain output stages were designed to provide rail-to-rail operation with up to 8mA loads. Even

at loads of up to 8mA, the supply-current change during an output transition is extremely small (see Figure 4 on page

6). Figure 4 shows the minimal supply-current increase as the outp ut switchi ng frequency approaches 1MHz. This

characteristic eliminates the need for power-supply filter capacitors to reduce glitches created by comparator switching

currents.

Because of the unique design of its output stage, the AS1970 - AS1975 ca n dramatically increase battery life, even in

high-speed applications.

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AS1970

Data Sheet - Ap plication Information

9 Application Information

Figure 17 shows a typical application circu it for the AS1970 - AS1975 comparators.

Figure 17. Typical Application Diagram – Threshold Detector

Hysteresis (AS1970/AS1972/AS1974)

The AS1970/AS1972/AS1974 have 3mV internal hysteresis. Additional hysteres is can be gen erated with three resis-

tors using positive feedback (Figure 18), however this method also slows hysteresis response time.

Figure 18. Additional Hysteresis AS197 0/AS1972/AS1974

Resistor Selection Example

For the circuit shown in Figure 18, the following steps can be used to calculate values for R1, R2, and R3.

1. Select R3 first. The current through R3 should be at least 1µA to minimize errors caused by leakage current. The

current through R3 at the trip point is: (VREF - VOUT)/R3(EQ 1)

The two possible output states in solving for R3 yields these two formulas:

R3 = VREF/1µA (EQ 2)

R3 = (VREF - VCC)/1µA (EQ 3)

For example, for VREF = 1.2V and VCC = 5V, the two R3 resistor values are 1.2MΩ and 3.8MΩ. Use the smaller of

the two resulting resistor values; in this case a standard 1.2MΩ resistor should be used for R3.

2. Choose the hysteresis band (VHB). For this example, use VHB = 50mV.

3. Calculate R1 accordi ng to the following equation:

R1 = R3(VHB/VCC)(EQ 4)

Substituting the example values for R3 and VHB gives:

R1 = 1.2MΩ(50mV/5V) = 1 2 kΩ

AS1970 - AS1975 RPULLUP †

† AS1971/AS1973/AS1975 only

VIN

IN-

OUT

VCC

VEE

IN+

OUT

R3VCC

VIN

VREF

VEE

VCC

–

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AS1970

Data Sheet - Ap plication Information

4. Choose the trip point for VIN rising (VTHR) (see page 12). This is the threshold voltage at which the AS1970 -

AS1975 switches its output from low to high as VIN rises above the trip point. For this example, choose VTHR = 3V.

5. Calculate R2 as:

R2 = 1/[VTHR/(VREF x R1) - (1/R1) - (1/R3)] (EQ 5)

Substituting th e example values gives:

R2 = 1/[3.0V/(1.2V x 12kΩ) - (1/12kΩ) - (1/1.2MΩ)] = 8.05kΩ

In this example, a standard 8.2kΩ resistor should be used for R2.

6. Verify the trip voltages and hysteresis as:

VTHR = VREF x R1[(1/R1) + (1/R2) + (1/R3)] (EQ 6)

VTHF = VTHR - (R1 x VCC/R3)(EQ 7)

Hysteresis = VTHR - VTHF (EQ 8)

Hysteresis (AS1971/AS1973/AS1975)

The AS1971/AS1973/AS1975 have 3mV internal hysteresis. Their open-drain outputs require an external pullup resis-

tor (Figure 19), and additional hysteresis can be generated using positive feed back.

Figure 19. Additional Hysteresis AS197 1/AS1973/AS1975

Resistor Selection Example

For the circuit shown in Figure 19, the following steps can be used to calculate values for R1, R2, R 3, and R4:

1. Select R3 according to one of:

R3 = VREF/500µA (EQ 9)

R3 = (VREF - VCC)/500µA - R4(EQ 10)

Use the smaller of the two resulting resistor values.

2. Choose the hysteresis band required (VHB). For this example, use 50mV.

3. Calculate R1 as:

R1 = (R3 + R4)(VHB/VCC)(EQ 11)

4. Choose the trip point for VIN rising (VTHR) (see page 12). This is the threshold voltage at which the comparator

switches its output from low to high as VIN rises ab ove the trip point.

5. Calculate R2 as:

R2 = 1/[VTHR /(VREF x R1) - (1/R1) - 1/(R3 + R4)] (EQ 12)

6. Verify the trip voltages and hysteresis as follows:

VIN rising: VTHR = VREF x R1 x [1/R1 + 1/ R2 + 1/(R3 + R4)] (EQ 13)

VIN falling: VTHF = VREF x R1 x [1/R1 + 1/R2 + 1/(R3+R4)] - 1/(R3+R4) x VCC (EQ 14)

Hysteresis = VTHR - VTHF (EQ 15)

VEE

VCC

–

VCC

VREF

VIN OUT

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AS1970

Data Sheet - Ap plication Information

Hysteresis Band

Internal hysteresis creates two trip points (shown in Figure 20): rising input voltage (VTHR) and falling inp ut voltage

(VTHF). The area between the trip points is the hysteresis band (VHB). When the comparator input voltages are equiva-

lent, the hysteresis effectively causes one comparator input to move quickly past the other, thus taking the input out of

the region where oscillation occurs.

In Figure 20 REF has a fixed voltage applied and IN+ is varied. If the inputs are reversed the output will be inverted.

Figure 20. Threshold Hysteresis Band

Zero-Crossing Detector

Figure 21 shows the AS1970 in a zero-cro ssing detector circuit. The inverting inpu t is connected to ground, and the

non-inverting input is conn ected to a 100mVp-p signal source. As the signal at the non-invertin g input crosses 0V, the

signal at OUT changes states.

Figure 21. Zero-Crossing Detector

Logic Level Translator

The comparators can be used as a 5V/3V logic translator as shown in Figure 22. The circuit in Figure 22 converts 5V-

to 3V-logic levels, and provides the full 5V logic-swing without creatin g ove r vo l tage on the 3V logic in pu ts. When the

comparator is powered by a 5V supply, RPULLUP for the open-drain output should be connected to the +3V supply volt-

age.

For 3V-to-5V logic-level translations, connect the +3V supply vo ltage to VCC and the +5V supply voltage to RPULLUP.

Figure 22. Logic Level Translator

IN+

OUT

VTHR

VTHF

REF

Thresholds

Hysteresis

Band

VHB

VEE

OUT

100mVp-p

AS1970

IN-

IN+

VCC

–

AS1971 RPullup

+5/+3V

Logic Out

+3/+5V

+5/+3V

Logic In

100kΩ

+3/+5V

IN-

VEE

IN+

OUT

VCC

–

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AS1970

Data Sheet - Ap plication Information

Layout Considerations

The AS1970 - AS1975 require s proper layout and design tech niques for optimum performance.

! Power-supply bypass capacitors are not typically needed, although 100nF bypass capacitors should be used when

supply impedance is high, when supply leads are long, or when excessive noise is expected on the supply lines.

! Minimize signal trace leng ths to reduce stray capacitance.

! A ground plane and surface-mount compone nts are recommen ded.

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AS1970

Data Sheet - Package Drawings and Markings

10 Package Drawings and Markings

The AS1970 - AS1975 are available in a 5-pin SOT23 package and an 8-pin MSOP package.

Figure 23. 5-pin SOT23 Package

Notes:

1. Controlling dimension is millimeters.

2. Foot length measured at intercept point between datum A and lead surface.

3. Package outline exclusive of mold flash and metal burr.

4. Package outline inclusive of solder plating.

5. Meets JEDEC MO178.

Symbol Min Max

A0.901.45

A1 0.00 0.15

A2 0.90 1.30

b0.300.50

C0.090.20

D2.803.05

E2.603.00

E1 1.50 1.75

L0.300.55

e0.95 REF

e1 1.90 REF

α0º 8º

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AS1970

Data Sheet - Package Drawings and Markings

Figure 24. 8-pi n MSOP Pa cka ge

Notes:

1. All dimensions are in millimeters and all angles in degrees (unless otherwise noted).

2. Datums B and C to be determined at datum plane H.

3. Dimensions D and E1 are to be determined at datum plane H.

4. Dimensions D2 and E2 are for the top package; dimensions D and E1 are for the bottom package.

5. Cross section A-A to be determined at 0.13 to 0.25mm from the leadtip.

6. Dimensions D and D2 do not include mold flash, protrusion, or gate burrs.

7. Dimensions E1 and E2 do not include interlead flash or protrusion.

Symbol Typ ±Tol Symbol Typ ±Tol

A 1.10 Max b 0.33 +0.07/-0.08

A1 0.10 ±0.05 b1 0.30 ±0.05

A2 0.86 ±0.08 c 0.18 ±0.05

D 3.00 ±0.10 c1 0.15 +0.03/-0.02

D2 2.95 ±0.10 θ13.0º ±3.0º

E 4.90 ±0.15 θ2 12.0º ±3.0º

E1 3.00 ±0.10 θ3 12.0º ±3.0º

E2 2.95 ±0.10 L 0.55 ±0.15

E3 0.51 ±0.13 L1 0.95 BSC –

E4 0.51 ±0.13 aaa 0.10 –

R 0.15 +0.15/-0.08 bbb 0.08 –

R1 0.15 +0.15/-0.08 ccc 0.25 –

t1 0.31 ±0.08 e 0.65 BSC –

t2 0.41 ±0.08 S 0.525 BSC –

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AS1970

Data Sheet - Package Drawings and Markings

Figure 25. 14-pin TSSOP Package

Notes:

1. All dimensions are in millimeters; angles in degrees.

2. Dimensions and tolerancing per ASME Y14.5M-1994.

3. Dimension D does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not

exceed 0.15mm per side.

4. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.25mm

per side.

5. Dimension b does not include dambar protrusion. Al lowable dambar protrusion shall be 0.08mm total in excess of

dimension b at maximum material condition. Dambar cannot be located on the lower radius of th e foot. Minimum

space between protrusion and adjacent lead is 0.07mm for 0.5mm pitch packages.

6. Terminal numbers shown are for reference only.

7. Datums A and B to be determined at datum plane H.

8. Dimensions D and E1 to be determined at datum plane H.

9. This dimension applies only to variations with an even number of leads per side. For variations with an odd number

of leads per package, the center lead must be coincident with the package centerline, datum A.

10. Cross section A-A to be determined at 0.10 to 0.25mm from the leadtip.

Symbol 0.65mm Lead Pitch 1, 2 Note Symbol 0.65mm Lead Pitch 1, 2 Note

Min Nom Max Min Nom Max

A- -1.10 θ10º - 8º

A1 0.05 - 0.15 L1 1.0 Ref

A2 0.85 0.90 0.95 aaa 0.10

L 0.50 0.60 0.75 bbb 0.10

R 0.09 - - ccc 0.05

R1 0.09 - - ddd 0.20

b 0.19 - 0.30 5 e 0.65 BSC

b1 0.19 0.22 0.25 θ212º Ref

c 0.09 - 0.20 θ312º Ref

c1 0.09 - 0.16 Variations

D 4.90 5.00 5.10 3, 8 e 0.65 BSC

E1 4.30 1.40 4.50 4, 8 N 14 6

E 6.4 BSC

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AS1970

Data Sheet - Ordering Information

11 Ordering Information

The comparators are available as the standard products shown in Table 5.

Tabl e 5. Ordering Information

Model Marking Description Delivery Form Package

AS1970-T ASI6 Low-Voltage Single Comparator, Push/Pull Tape and Reel 5-pin SOT23

AS1971-T ASI7 Low-Voltage Single Comparator, Open-Drain Tape and Reel 5-pin SOT23

AS1972 989 Low-Voltage Dual Comparator, Push/Pull Tubes 8-pin MSOP

AS1972-T 989 Low-Voltage Dual Comparator Push/Pull Tape and Reel 8-pin MSOP

AS1973 990 Low-Voltage Dual Comparator, Open-Drain Tubes 8-pin MSOP

AS1973-T 990 Low-Voltage Dual Comparator, Open-Drain Tape and Reel 8-pin MSOP

AS1974 AS1974 Low-Voltage Quad Comparator, Push/Pull Tubes 14-pin TSSOP

AS1974-T AS1974 Low-Voltage Quad Comparator, Push/Pull Tape and Reel 14-pin TSSOP

AS1975 AS1975 Low-Voltage Quad Comparator, Open-Drain Tubes 14-pin TSSOP

AS1975-T AS1975 Low-Voltage Quad Comparator, Open-Drain Tape and Reel 14-pin TSSOP

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AS1970

Data Sheet

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Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing

in its Term of S ale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding

the information set forth herein or regardi ng th e freedom of the described devices from patent infringement. austriami-

crosystems AG reserves the right to change specifications and prices at any time and withou t notice. Therefore, prior

to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information.

This product is intended for use in normal commercial applications. Applicati ons requiring extended temperature

range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-

sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for

each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard

production flow, such as test flow or test location.

The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However,

austriamicrosystems AG shall not be liable to recipient or any third party for any dama ges, including but not limited to

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