SY100EP56VK4I - Micrel Semiconductor, Inc.

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

DESCRIPTION

FEATURES

3.3V/5V PECL/ECL 3GHz

DUAL DIFFERENTIAL

2:1 MULTIPLEXER

ECL Pro™

SY100EP56V

■Dual, fully differential 2:1 PECL/ECL multiplexer

■Guaranteed AC parameters over temperature/

voltage:

• > 3GHz fMAX (toggle)

• < 100ps within device skew

• < 230ps rise/fall times

• < 500ps propagation delay

■Flexible power supply: 3.0V to 5.5V

■Wide operating temperature range: –40°C to +85°C

■VBB reference for AC-coupled and single-ended

applications

■Both channels have independent input select or

common select control

■ 100k PECL/ECL compatible logic

■ Available in 20-pin TSSOP package

The SY100EP56V is a high-speed, low-skew, fully

differential Dual PECL/ECL 2:1 multiplexer. This device is a

pin-for-pin, plug-in replacement to the MC10/100EP56DT.

Two separate 2:1 multiplexers (Channel 0 and Channel 1)

with dedicated select control pins (SEL0 and SEL1) are

implemented in a 20-pin TSSOP package. The signal-path

inputs (D0a, D0b and D1a, D1b) accept differential signals

as low as 150mV pk-pk. For applications that require

common select control for both channels A & B, a common

select pin (COM_SEL) is available. All I/O pins are 100k

PECL/ECL logic compatible.

AC–performance is guaranteed over the industrial –40°C

to +85°C temperature range and 3.0V to 5.5V supply voltage

range. This device will operate in PECL/LVPECL or ECL/

LVECL mode. The 500ps max (400 typ) propagation delay

is matched for all signal and logic select paths: D-to-QOUT,

SEL-to-QOUT, and COM_SEL-to-QOUT. Two VBB output

reference pins (approx equal to VCC –1.4V) are available

for AC–coupled or single-ended applications.

The SY100EP56V is part of Micrel’s high-speed, Precision

Edge timing and distribution family. For applications that

require a different I/O combination, consult the Micrel website

at www.micrel.com, and choose from a comprehensive

product line of high-speed, low skew fanout buffers,

translators, and clock dividers.

Rev.: D Amendment: /0

Issue Date: December 2005

Micrel Semiconductor ON Semiconductor

SY100EP56VK4I MC100EP56DT

SY100EP56VK4ITR MC100EP56DTR2

CROSS REFERENCE TABLE

ECL Pro™

ECL Pro is a trademark of Micrel, Inc.

MUX SELECT TRUTH TABLE

SEL0 SEL1 COM_SEL Q0, /Q0 Q1, /Q1

XX Haa

LL Lbb

LH Lba

HH L aa

HL Lab

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

PIN DESCRIPTION

Pin Pin Number Function

D0a, /D0a 1, 2, Channel 0 PECL/ECL differential signal inputs. Multiplexing of these two differential inputs is

D0b, /D0b 4, 5 controlled by SEL0, or COM_SEL. The signal inputs include internal 75kΩ pull-down resistors.

Default condition is LOW when left floating. The input signal should be terminated externally.

See “

Termination

” section

D1a, /D1a 6, 7 Channel 1 PECL/ECL differential signal inputs. Multiplexing of these two differential inputs is

D1b, /D1b 9, 10 controlled by SEL1, or COM_SEL. The signal inputs include internal 75kΩ pull-down resistors.

Default condition is a logic LOW when left floating. The input signal should be terminated

externally. See “

Termination

” section

VBB0, VBB1 3, 8 Channel 0 and Channel 1 reference output voltage. This reference is typically used to bias the

unused inverting input for single-ended input applications, or as the termination point for AC–

coupled differential input applications. VBB reference value is approximately VCC –1.4V, and tracks

VCC 1:1. Maximum sink/source capability is 0.50mA. For single ended PECL inputs, connect to

the unused input through a 50Ω resistor. Decouple the VBB pin with a 0.01µF capacitor. For PECL/

LVPECL inputs, the decoupling capacitor is connected to VCC, since PECL signals are referenced

to VCC. Leave floating if not used.

VEE 11 Negative Power Supply: For PECL/LVPECL applications, connect to GND.

/Q1, Q1 12, 13 Channel 1 100KEP PECL/ECL compatible differential output. PECL/ECL termination is with a 50Ω

resistor to VCC–2V. Unused output pairs may be left floating. Unused single-ended outputs must

have a balanced load. For AC-coupled applications, the output stage emitter follower must have a

DC current path to ground. See “

Termination

” section.

SEL1, SEL0 15, 17 100KEP PECL/ECL compatible Channel 1 and Channel 0 MUX select control. See “

MUX Select

Truth Table

.” Each pin includes an internal 75kΩ pull-down resistor. Default condition when left

floating is LOW.

COM_SEL 16 100KEP PECL/ECL compatible Channel 1 and Channel 0 Common MUX select control. This is

the common select control pin for both Channels 0 and 1. Includes an internal 75kΩ pull-down

resistor. Default condition when left floating is LOW. Leave floating when not used.

/Q0, Q0 18, 19 Channel 0 100K EP PECL/ECL compatible differential output. PECL/ECL termination is with a

50Ω resistor to VCC –2V. Unused output pairs may be left floating. Unused single-ended outputs

must have a balanced load. For AC–coupled applications, the output stage emitter follower must

have a DC current path to ground. See “

Termination

” section.

VCC 14, 20 Positive Power Supply: Both VCC pins must be connected to the same power supply externally.

Bypass with 0.1µF//0.01µF low ESR capacitors.

PACKAGE/ORDERING INFORMATION

20-Pin TSSOP (K4-20-1)

Ordering Information(1)

Package Operating Package Lead

Part Number Type Range Marking Finish

SY100EP56VK4I K4-20-1 Industrial XEP56V Sn-Pb

SY100EP56VK4ITR(2) K4-20-1 Industrial XEP56V Sn-Pb

SY100EP56VK4G(3) K4-20-1 Industrial XEP56V with Pb-Free

Pb-Free bar-line indicator NiPdAu

SY100EP56VK4GTR(2, 3) K4-20-1 Industrial XEP56V with Pb-Free

Pb-Free bar-line indicator NiPdAu

Notes:

1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only.

2. Tape and Reel.

3. Pb-Free package is recommended for new designs.

VBB0

D0b

/D0b

D1a

/D1a

VBB1

D1b

/D1b

18 /Q0

SEL0

COM_SEL

SEL1

VEE

D0a

/D0a

/Q1

VCC

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

Symbol Rating Value Unit

VCC —V

EE Power Supply Voltage 6.0 V

VIN Input Voltage (VCC = 0V, VIN not more negative than VEE) –6.0 to 0 V

Input Voltage (VEE = 0V, VIN not more positive than VCC) +6.0 to 0 V

IOUT Output Current –Continuous 50 mA

–Surge 100

IBB VBB Sink/Source Current(2) ±0.5 mA

TLEAD Lead Temperature (soldering, 20sec.) +260 °C

TAOperating Temperature Range –40 to +85 °C

Tstore Storage Temperature Range –65 to +150 °C

θJA Package Thermal Resistance –Still-Air (single-layer PCB) 115 °C/W

(Junction-to-Ambient) –Still-Air (multi-layer PCB) 75

–500lfpm (multi-layer PCB) 65

θJC Package Thermal Resistance 21 °C/W

(Junction-to-Case)

Notes:

1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied

at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratlng conditions for extended

periods may affect device reliability.

2. Due to the limited drive capability, the VBB reference should only be used for inputs from the same package device (i.e., do not use for other

devices).

ABSOLUTE MAXIMUM RATINGS(1)

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VCC Power Supply Voltage V

(PECL) 4.5 5.0 5.5 4.5 5.0 5.5 4.5 5.0 5.5

(LVPECL) 3.0 3.3 3.8 3.0 3.3 3.8 3.0 3.3 3.8

(ECL) –5.5 –5.0 –4.5 –5.5 –5.0 –4.5 –5.5 –5.0 –4.5

(LVECL) –3.8 –3.3 –3.0 –3.8 –3.3 –3.0 –3.8 –3.3 –3.0

IEE Supply Current — 50 65 — 50 65 — 50 65 mA No Load

IIH Input HIGH Current — — 150 — — 150 — — 150 µAV

IN = VIH

IIL Input LOW Current

All Inputs

0.5 — — 0.5 — — 0.5 — — µAV

IN = VIL

CIN Input Capacitance (TSSOP) ————1.0————pF

Note:

1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in

a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.

DC ELECTRICAL CHARACTERISTICS(1)

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VIL Input LOW Voltage 1355 — 1675 1355 — 1675 1355 — 1675 mV

(Single-Ended)

VIH Input HIGH Voltage 2075 — 2420 2075 — 2420 2075 — 2420 mV

(Single-Ended)

VOL Outuput LOW Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV

50Ω to V

–2V

VOH Output HIGH Voltage 2155 2280 2405 2155 2280 2405 2155 2280 2405 mV

50Ω to V

–2V

VBB Output Reference Voltage 1775 1875 1975 1775 1875 1975 1775 1875 1975 mV

VIHCMR Input HIGH Voltage(2) 2.0 — VCC 2.0 — VCC 2.0 — VCC V

Common Mode Range

(100KEP) LVPECL DC ELECTRICAL CHARACTERISTICS(1)

VCC = 3.3V ±10%, VEE = 0V

Notes:

1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in

a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output parameters are at VCC =

3.3V. They vary 1:1 with VCC.

2. The VIHCMR range is referenced to the most positive side of the differential input signal.

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VIL Input LOW Voltage 3055 — 3375 3055 — 3375 3055 — 3375 mV

(Single-Ended)

VIH Input HIGH Voltage 3775 — 4120 3775 — 4120 3775 — 4120 mV

(Single-Ended)

VOL Outuput LOW Voltage 3055 3180 3305 3055 3180 3305 3055 3180 3305 mV

50Ω to V

–2V

VOH Output HIGH Voltage 3855 3980 4105 3855 3980 4105 3855 3980 4105 mV

50Ω to V

–2V

VBB Output Reference Voltage 3475 3575 3675 3475 3575 3675 3475 3575 3675 mV

VIHCMR Input HIGH Voltage(2) 2.0 — VCC 2.0 — VCC 2.0 — VCC V

Common Mode Range

(100KEP) PECL DC ELECTRICAL CHARACTERISTICS(1)

VCC = 5.0V ±10%, VEE = 0V

Notes:

1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in

a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output parameters are at VCC =

5.0V. They vary 1:1 with VCC.

2. The VIHCMR range is referenced to the most positive side of the differential input signal.

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

VIL Input LOW Voltage –1945 — –1625 –1945 — –1625 –1945 — –1625 mV

VIH Input HIGH Voltage –1225 — –880 –1225 — –880 –1225 — –880 mV

VOL Outuput LOW Voltage –1945 –1820 –1695 –1945 –1820 –1695 –1945 –1820 –1695 mV

50Ω to V

–2V

VOH Output HIGH Voltage –1145 –1020 –895 –1145 –1020 –895 –1145 –1020 –895 mV

50Ω to V

–2V

VBB Output Reference Voltage –1525 –1425 –1325 –1525 –1425 –1325 –1525 –1425 –1325 mV

VIHCMR Input HIGH Voltage(2) VEE +2.0 0.0 VEE +2.0 0.0 VEE +2.0 0.0 V

Common Mode Range

(100KEP) ECL/LVECL DC ELECTRICAL CHARACTERISTICS(1)

VCC = 0V, VEE = –5.5V to –3.0V

Notes:

1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in

a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.

2. The VIHCMR range is referenced to the most positive side of the differential input signal.

TA = –40°CT

A = +25°CT

A = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition

fMAX Max. Toggle Frequency(1) 3——3——3——GHz

tPLH Propagation Delay (Differential)

tPHL D to Q, /Q 230 290 450 230 290 470 230 300 500 ps

SEL to Q, /Q 250 300 450 250 320 470 250 330 500 ps

COM_SEL to Q, /Q 250 350 450 250 360 470 250 400 500 ps

tSKEW Within-Device Skew(2) Q, /Q — 50 100 — 50 100 — 50 100 ps

Part-to-Part Skew(2) — — 200 — — 200 — — 200 ps

tJITTER Cycle-to-Cycle Jitter (rms) — 0.2 < 1 — 0.2 < 1 — 0.2 < 1 ps rms

Random Jitter ————<1————ps

rms Note 3

Deterministic Jitter

@1.25Gbps ————<25————ps

pk-pk Note 4

@2.5Gbps ————<50————

VDIFF Input Voltage (Differential) 150 800 1200 150 800 1200 150 800 1200 mV

tr, tfOutput Rise/Fall Time Q, /Q — 120 170 — 130 180 — 150 230 ps

(20% to 80%)

AC ELECTRICAL CHARACTERISTICS

VCC = 0V; VEE = –3.0V to –5.5V or VCC = 3.0V to 5.5V, VEE = 0V

Notes:

1. Measured with 750mV input signal, 50% duty cycle. Output swing ≥400mV. All loading with a 50Ω to VCC –2.0V.

2. Skew is measured between outputs under identical transitions. Duty cycle skew is defined only for differential operation when the delays are

measured from the cross point of the inputs to the cross point of the outputs.

3. RJ is measured with a K28.7 comma detect character pattern, measured at 1.25Gbps and 2.5Gbps.

4. DJ is measured at 1.25Gbps and 2.5Gbps, with both K28.5 and 223–1 PRBS pattern.

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

TYPICAL OPERATING CHARACTERISTICS

VCC = 3.3V, VEE = GND, TA = 25°C, unless otherwise stated.

500MHz Output

TIME (300ps/div.)

Output Swing

(200mV/div.)

TA = 25°C

VCC = 3.3V

VEE GND

VIN = 800mV

1.5GHz Output

TIME (100ps/div.)

Output Swing

(200mV/div.)

TA = 25°C

VCC = 3.3V

VEE GND

VIN = 800mV

2.5GHz Output

TIME (60ps/div.)

Output Swing

(200mV/div.)

TA = 25°C

VCC = 3.3V

VEE GND

VIN = 800mV

3.0GHz Output

TIME (55ps/div.)

Output Swing

(200mV/div.)

TA = 25°C

VCC = 3.3V

VEE GND

VIN = 800mV

100

200

300

400

500

600

700

800

900

500

1000

1500

2000

2500

3000

3500

4000

OUTPUT AMPLITUDE (mV)

FREQUENCY (MHz)

Output Amplitude

vs. Frequency

= 25°C

= 3.3V

= 800mV

280

290

300

310

320

330

340

350

360

-40

-30

-20

-10

PROPAGATION DELAY (ps)

TEMPERATURE (°C)

Propagation Delay

vs. Temperature

= 25°C

= 3.3V

= 800mV

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

TERMINATION RECOMMENDATIONS

82Ω

ZO = 50Ω

+3.3V +3.3V

Vt = VCC —2V

130Ω

+3.3V

Figure 1. Parallel Termination–Thevenin Equivalent

Note:

1. For +5.0V systems: R1 = 82Ω, R2 = 130Ω.

Z = 50Ω

50Ω50Ω

50Ω

+3.3V +3.3V

source destination

RbC1 (optional)

0.01µF

Figure 2. Three-Resistor “Y–Termination”

Notes:

1. Power-saving alternative to Thevenin termination.

2. Place termination resistors as close to destination inputs as possible.

3. Rb resistor sets the DC bias voltage, equal to Vt. For +3.3V systems Rb = 46Ω to 50Ω. For +5V systems, Rb = 110Ω.

+3.3V +3.3V

= 50Ω

82Ω

+3.3V +3.3V

130Ω

82Ω

= V

—2V

50Ω

+3.3V

0.01µF

Figure 3. Terminating Unused I/O

Notes:

1. Unused output (/Q) must be terminated to balance the output.

2. Micrel's differential I/O logic devices include a VBB reference pin .

3. Connect unused input through 50Ω to VBB. Bypass with a 0.01µF capacitor to VCC, not GND, as PECL is referenced to VCC.

4. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω.

ECL Pro™

SY100EP56V

Micrel, Inc.

M9999-120505

hbwhelp@micrel.com or (408) 955-1690

20-PIN TSSOP (K4-20-1)

± .10

± .004

+ .10

– .00

+ .004

– .000

± .05

± 0.002

+ .10

– .00

+ .004

– .000

± .10

± .004

Rev. 01

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com

The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.

Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can

reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into

the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s

use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify

Micrel for any damages resulting from such use or sale.