July 2007 Rev 4 1/20
1
STHS2375A, STHS2375L, STHS2376A,
STHS2376L, STHS2377A, STHS2377L
IEEE 802.3af PoE Powered Device (PD) interface controller
Features
■IEEE 802.3af-compliant interface for Powered
Devices (PDs)
■Integrated 100V, 500mA power MOSFET
■Resistor-programmable inrush current limit
■Normal operation current limit 460mA
■External 25kΩ signature resistor
■Resistor-programmable classification current
(Class 0-4)
■Power Good output (active-high), open drain
■Undervoltage Lockout (UVLO) - standard,
programmable, and legacy (see Table 1)
■Thermal overload protection
■Latch (L) or auto-retry (A) after hard current
overload or repetitive thermal overload
■Industrial temperature range: –40 to +85°C
■8-pin SO and 8-pin TSSOP packages
■RoHS compliant
Applications
■Voice over IP (VOIP) phones
■Web cameras
■WLAN access points
■Internet appliances
■POS terminals
■RFID readers
SO8 (M)
8
1
TSSOP8 (DW)
Table 1. Device options
Order code
External
signature
resistor (1%)
UVLO
UVLO
threshold,
rising (V)
UVLO
threshold,
falling (V)
Protection
mode
STHS2375A 24.9kΩStandard 39.3 30.5 Auto
STHS2375L 24.9kΩStandard 39.3 30.5 Latch
STHS2376A 24.9kΩProgrammable 2.49 1.93 Auto
STHS2376L 24.9kΩProgrammable 2.49 1.93 Latch
STHS2377A 24.9kΩLegacy 35.1 30.5 Auto
STHS2377L 24.9kΩLegacy 35.1 30.5 Latch
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Contents STHS237x
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Contents
1 Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.1 Current limit (ILIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.2 Classification (CLASS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.3 Detection resistor (DET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.4 Ground (VSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.5 Return (RTN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.6 Power Good output (PG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1.7 Undervoltage Lockout Input (UVLO, STHS2376A/L only) . . . . . . . . . . . . 7
1.1.8 Power supply (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Absolute maximum ratings STHS237xA, STHS237xL . . . . . . . . . . . . . 11
3 Electrical parameters STHS237xA, STHS237xL . . . . . . . . . . . . . . . . . . 12
4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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STHS237x List of figures
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List of figures
Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. STHS2375A/L, STHS2377A/L pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. STHS2376A/L pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. Application circuit overview (STHS2375A/L, STHS2377A/L) . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5. STHS237xA block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 6. STHS237xL block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 7. SO8 – 8-lead plastic small outline, 150 mils width, package outline. . . . . . . . . . . . . . . . . . 16
Figure 8. TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package outline . . . . . . . . . . . . . . 17
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List of tables STHS237x
4/20
List of tables
Table 1. Device options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. IEEE802.3af PD power classes and corresponding RCLASS values. . . . . . . . . . . . . . . . . . . 8
Table 4. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 5. Electrical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 6. DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 7. SO8 – 8-lead plastic small outline, 150 mils width, package mechanical data. . . . . . . . . . 16
Table 8. TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package mechanical data. . . . . . . 17
Table 9. Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 10. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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STHS237x Summary description
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1 Summary description
The STHS237x is an IEEE802.3af-compliant family of interface controllers for Power over
Ethernet (PoE) Powered Device (PD) applications. The devices consist of two main
sections:
●The IEEE802.3af interface to the PoE powered RJ-45 wall socket, and
●the Hot Swap Controller (HSC) functions required to protect the PD during insertion,
operation, and withdrawal from the RJ-45 socket.
These devices have an integrated high voltage power MOSFET (low-side switch) with low
RDS ON and the capability to accept transients as high as 100V. Since the pins (such as VDD
and VSS) which interface to the RJ-45 socket can routinely see high peak voltages in excess
of 100V, it is strongly recommended that board designers protect the PD device with a
transient voltage suppressor, such as the SMAJ58A (available from STMicroelectronics),
connected between the VDD and VSS pins (see Figure 4 on page 8).
The IEEE802.3af-compliant interface includes the basic PD Detection and Classification
functions, whereas the 'Hot Swap' functions include other basic features, such as Inrush
Current Limiting, Undervoltage Lockout (UVLO), and Thermal Overload Protection. All of the
devices include an open drain Power Good (PG) signal to indicate normal steady operation
(see Figure 1 on page 6 and Table 2 on page 6). The STHS237x family also incorporates a
voltage offset (two series diodes) to accommodate the input diode bridge used to make the
PD polarity insensitive.
The STHS237x family comprises devices for all the UVLO limits configurations: IEEE
standard compliant (STHS2375), programmable (STHS2376) and for legacy systems
(STHS2377). See Table 1 on page 1.
Each of the basic part types, the STHS2375, STHS2376 and the STHS2377, is available
either with Latched Operation (L) Mode or with Automatic Retry (A) Mode after fault
conditions. For product options overview see Table 1 on page 1.
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Summary description STHS237x
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Figure 1. Logic diagram
1. STHS2376A/L devices only.
1. STHS2376A/L devices only, for other part types No Connect.
Figure 2. STHS2375A/L, STHS2377A/L pin connections (top view)
Figure 3. STHS2376A/L pin connections (top view)
Table 2. Signal names
Pin Symbol Description
1I
LIM Inrush Current Limit resistor
2 CLASS Classification resistor
3 DET Powered Device Detection resistor
4V
SS Ground on the input side; return power line to PSE
5 RTN Return power output, negative rail
6 PG Power Good Output, open drain, active-high (referenced to RTN)
7UVLO
(1) Programmable Undervoltage Lockout input pin
8V
DD Positive Power Supply; common input/output power rail
AI12241
VDD
STHS2375A/L
STHS2376A/L
STHS2377A/L
VSS
UVLO(1)
ILIM
CLASS RTN
DET
PG
ILIM
CLASS
DET
VSS
VDD
NC
RTN
AI12238
PG
1
2
3
4
8
7
6
5
ILIM
CLASS
DET
VSS
VDD
UVLO
RTN
AI12239
PG
1
2
3
4
8
7
6
5
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STHS237x Summary description
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1.1 Pin descriptions
1.1.1 Current limit (ILIM)
Connect a resistor between ILIM and VSS to set the start-up inrush current limit.
ILIM = 25 000/RILIM [A]. Practical values of RILIM are between 62.5kΩ and 500kΩ.
RILIM = 178kΩ for inrush current of 140mA for compatibility with legacy PSEs. Do not leave
open or connect to VSS.
1.1.2 Classification (CLASS)
Connect a Classification resistor between this pin and VSS to tell the PSE which power class
will be connected. Do not connect this pin directly to VSS.
For classification resistor values, see Table 3 on page 8.
1.1.3 Detection resistor (DET)
Connect a 24.9kΩ resistor between DET and VDD to allow the PSE to detect the Powered
Device properly.
1.1.4 Ground (VSS)
This is the return power line on the PSE side (negative).
1.1.5 Return (RTN)
This is the return power output on the load side, negative rail.
1.1.6 Power Good output (PG)
This pin indicates that the STHS power MOSFET is fully on and works in normal operation
mode (Power Good). Open drain, high impedance means that the power is good; in all other
cases, the impedance is low (referenced to RTN).
1.1.7 Undervoltage Lockout Input (UVLO, STHS2376A/L only)
Connect the tap of the resistor divider between VDD and VSS to set the UVLO voltage limits
(see Figure 6 on page 10).
Note: STHS2376A/L only, for all other devices, this is No Connect.
1.1.8 Power supply (VDD)
This is the Power Input/Output, positive rail.
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Summary description STHS237x
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Figure 4. Application circuit overview (STHS2375A/L, STHS2377A/L)
Note: This configuration uses either data wires or spare wires for DC power.
Table 3. IEEE802.3af PD power classes and corresponding RCLASS values
Class Usage Max. Power at Input of
PD (W)
Classification Load
Current Limits (mA)
RCLASS Resistor
(Ω, 1%)
0 Default 0.44 to 12.95 0-4 4420
1 Optional 0.44 to 3.84 9-12 953
2 Optional 3.84 to 6.49 17-20 549
3 Optional 6.49 to 12.95 26-30 357
4 Reserved Reserved(1)
1. Class 4 is currently reserved and should not be used.
36-44 255
Data to Ethernet Physical Layer Device
100
kΩ
100µF,
100V
+
0.1µF,
100V
To DC/DC
Converter
Data to Ethernet Physical Layer Device
CLASS
ILIM
SMAJ58A
RCLASS
RDET
RILIM
STHS2375A/L
STHS2377A/L
VSS
VDD
RTN
AI12240a
2x DF01S
RX
Pair
Spare
Pair
Spare
Pair
RJ-45
TX
Pair
PG
DET
C1 C2
24.9k
Ω,
1%
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STHS237x Summary description
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Figure 5. STHS237xA block diagram
1. STHS2376A/L devices only. The UVLO comparator is connected directly to the UVLO input pin instead of
the internal UVLO divider. For all other devices, pin 7 is NC (No Connect).
2.5V
PG Comparator
UVLO
Comp.
Current
Mirror
Current
Limit Amp.
Classification
Comparator
Detection
Comparator
SQ
R
+
–
+
–
+
–
EN
1:1
1
0
1 = Limiting
1 = Inrush
VSS
RTN
DET
AI12245a
PG
8
7
1
4
3
2
6
5
22V
VDD
ILIM
UVLO(1)
CLASS
1.5V
& 10V
Delay
150µs
2.5V Thermal Shutdown
10V
Regulator
+
–
+
–
Normal Oper.
Ref.
+
–
12V
0.1Ω
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Summary description STHS237x
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Figure 6. STHS237xL block diagram
1. STHS2376A/L devices only. The UVLO comparator is connected directly to the UVLO input pin instead of
the internal UVLO divider. For all other devices, pin 7 is NC (No Connect).
2.5V
PG Comparator
UVLO
Comp.
Current
Mirror
Current
Limit Amp.
Classification
Comparator
Detection
Comparator
SQ
R
+
–
+
–
+
–
EN
1:1
1
0
1 = Limiting
0 = Inrush
0 = Fault
VSS
RTN
DET
AI12246a
PG
8
7
1
4
3
2
6
5
22V
VDD
ILIM
UVLO(1)
CLASS
1.5V
& 10V
Delay
150µs
2.5V Thermal Shutdown,
Counter, and Latch
R
QS
10V
Regulator
+
–
+
–
+
–
12V
0.1Ω
Normal Oper.
Ref.
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STHS237x Absolute maximum ratings STHS237xA, STHS237xL
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2 Absolute maximum ratings STHS237xA, STHS237xL
Stressing the device above the rating listed in Table 4: Absolute maximum ratings may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Over the full operating temperature range, unless otherwise noted. Voltages are referenced
to the VSS pin.
Table 4. Absolute maximum ratings
Symbol Parameter Value Unit
Voltag e
VVDD, VRTN
Voltage on the respective pins, referenced
to VSS pin
–0.3 to 100 V
VDET
, VPG (1)
1. IRTN = 0
–0.3 to 90 V
VUVLO –0.3 to10 V
VILIM (2)
2. Voltage output, do not apply external voltage to the CLASS and ILIM pins.
–0.3 to 3 V
VCLASS (2) –0.3 to 12 V
Current, sinking
IRTN
Current sunk by the respective pins
0 to 515 mA
IPG 0 to 10 mA
IDET 0 to 1 mA
Current, sourcing
ICLASS Current sourced by the respective pins 0 to 100 mA
IILIM 0 to 1 mA
ESD
VHBM ESD Capability, Human body model 2 kV
VCDM ESD Capability, Charged device model 500 V
Temperature
TAOperating ambient temperature range –40 to 85 °C
TJMaximum junction temperature Internally
limited °C
TSTG Storage temperature –55 to 150 °C
TSLD
Lead solder temperature for 10 seconds,
lead-free lead finish (3)
3. Reflow at peak temperature of 260°C (total thermal budget not to exceed 245°C for more than
30 seconds).
260 °C
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Electrical parameters STHS237xA, STHS237xL STHS237x
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3 Electrical parameters STHS237xA, STHS237xL
Specifications common for all the STHS237xA/L product family unless otherwise
noted.
VDD = 48V, RDET = 24.9kΩ, RCLASS = 255Ω, RILIM = 178kΩ, TJ= –40 to 125°C, unless
otherwise noted, typical values at 25°C. For the STHS2376x VUVLO = 0V for classification
and VUVLO = 5V otherwise. Voltages are referenced to the VSS pin unless otherwise noted.
Positive currents are into pins.
Table 5. Electrical parameters
Symbol Parameter Test conditions Min Typ Max Units
Recommended operating conditions
Input voltage range
VDD, PG, RTN 057V
UVLO 05V
IRTN
Operating current
range (sinking) RTN 0 450 mA
RCLASS
Classification
resistor (1), (2)
1. Classification tested with exact resistor values. A 1% tolerance of classification resistor values is sufficient
for compliance with IEEE 802.3af classification current limits.
2. Do not apply external voltage to the CLASS and ILIM pins.
CLASS 255 4420 Ω
RILIM
Inrush current limit
programming
resistor (2)
62.5 500 kΩ
IPG(SINK) Sinking current PG = low 0 10 mA
TJ
Operating junction
temperature –40 125 °C
TA
Operating free-air
temperature –40 85 °C
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STHS237x Electrical parameters STHS237xA, STHS237xL
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Table 6. DC characteristics
Symbol Parameter Test conditions Min Typ Max Unit
Detection
Offset current DET open, VVDD = VRTN = 1.9V, measure
IVDD + IRTN
0.3 3 µA
Sleep current DET open, VVDD = VRTN = 10.1V, measure
IVDD + IRTN
412µA
IIL(DET) DET pin leakage current VDET = VVDD = 57V, measure IDET 0.1 5 µA
IDET Detection current VRTN = VVDD, RDET = 24.9kΩ,
measure IVDD + IRTN + IDET
VVDD = 1.4V 53.7 56 58.3 µA
VVDD = 10.1V 395 410 417 µA
Classification
ICLASS Classification current(1)
RCLASS = 4420Ω, VVDD = 13 to 21V 2.2 2.4 2.8 mA
RCLASS = 953Ω, VVDD = 13 to 21V 10.3 10.6 11.3 mA
RCLASS = 549Ω, VVDD = 13 to 21V 17.7 18.3 19.5 mA
RCLASS = 357Ω, VVDD = 13 to 21V 27.1 28.0 29.5 mA
RCLASS = 255Ω, VVDD = 13 to 21V 38.0 39.4 41.2 mA
VCL(ON) Classification lower
threshold Regulator turns on, VVDD rising 10.2 11.3 13.0 V
VCU(OFF)
Classification upper
threshold Regulator turns off, VVDD rising 21 21.9 23 V
VCU(H) Hysteresis 0.5 0.78 1 V
IIL(CLASS)
CLASS pin leakage
current VCLASS = 0V, VVDD = 57V 1 µA
Pass device
RDS(ON) On resistance IRTN = 300mA 0.72 1.0 Ω
IRTN(L) RTN pin leakage current VVDD = VRTN = 30V (VUVLO = 0V for
STHS2376x) 15 µA
ILIM(N)
Normal operation
current limit VRTN = 1V 405 461 515 mA
ILIM(I)
Inrush mode current
limit VRTN = 2V, RILIM = 178kΩ 100 130 180 mA
Inrush current
termination(2) VRTN falling, RILIM = 178kΩ, inrush mode to
normal operation mode 85 91 100 %
Current rise time to
inrush(3) RILIM = 69.8kΩ, VRTN-VSS = 5V, IRTN = 30 →
300mA, VVDD increasing past upper UVLO 15 34 µs
IIL(ILIM) ILIM pin leakage current VVDD = 15V, VUVLO = 0V 1 µA
Power Good (PG)
VRTN(LO R)
RTN latch off voltage,
rising(4) VRTN rising 9.5 10.0 10.5 V
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Electrical parameters STHS237xA, STHS237xL STHS237x
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1. Classification tested with exact resistor values. A 1% tolerance of classification resistor values is sufficient for compliance
with IEEE 802.3af classification current limits.
2. Percentage of the intial steady state RTN inrush current value, below which inrush is terminated and PG goes active.
3. Not tested in production.
4. Gradually increase VRTN from 0V until IRTN disappears.
PG deglitch Delay rising and falling PG 75 150 225 µs
VPG(OL) Output low voltage
IPG = 2mA, VRTN = 34V,
VVDD = 38V, VRTN falling 0.12 0.4 V
IPG = 2mA, VRTN = 0V, VVDD = 25V, for
STHS2376x VUVLO = 0V 0.12 0.4 V
IOL(PG) PG pin leakage current VVDD = VPG = 57V, VRTN = 0V 0.1 1 µA
Undervoltage lockout (UVLO)
VUVLO(R)
UVLO Thresholds,
STHS2375x
Voltage at VDD pin, VVDD rising 38.4 39.3 40.4 V
VUVLO(F) Voltage at VDD pin, VVDD falling 29.6 30.5 31.5 V
VUVLO(H) Hysteresis 8.3 8.8 9.1 V
VUVL(R)
UVLO Thresholds,
STHS2376x
Voltage at UVLO pin, VUVLO rising 2.43 2.49 2.57 V
VUVLO(F) Voltage at UVLO pin, VUVLO falling 1.87 1.93 1.98 V
VUVLO(H) Hysteresis 0.53 0.56 0.58 V
VUVLO(R)
UVLO Thresholds,
STHS2377x
Voltage at VDD pin, VVDD rising 34.1 35.1 36.0 V
VUVLO(F) Voltage at VDD pin, VVDD falling 29.7 30.5 31.4 V
VUVLO(H) Hysteresis 4.3 4.5 4.8 V
IIL(UVLO)
UVLO pin leakage
current (STHS2376x
only)
VUVLO = 0 to 5V –1 1 µA
Thermal shutdown
TSHUTDOWN
Shutdown
temperature(3),
temperature rising
140 °C
TSHUTDOWN H Hysteresis(3) 20 °C
Supply current
IDD Operating current 250 450 µA
Table 6. DC characteristics (continued)
Symbol Parameter Test conditions Min Typ Max Unit
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STHS237x Package mechanical data
15/20
4 Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
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Package mechanical data STHS237x
16/20
Figure 7. SO8 – 8-lead plastic small outline, 150 mils width, package outline
Note: Drawing is not to scale.
SO-A
E
8
ddd
B
e
A
D
C
LA1 α
1
H
h x 45˚
A2
Table 7. SO8 – 8-lead plastic small outline, 150 mils width, package mechanical
data
Symb
mm inches
Typ Min Max Typ Min Max
A – 1.35 1.75 – 0.053 0.069
A1 – 0.10 0.25 – 0.004 0.010
B – 0.33 0.51 – 0.013 0.020
C – 0.19 0.25 – 0.007 0.010
D – 4.80 5.00 – 0.189 0.197
ddd – – 0.10 – – 0.004
E – 3.80 4.00 – 0.150 0.157
e1.27– –0.050– –
H – 5.80 6.20 – 0.228 0.244
h – 0.25 0.50 – 0.010 0.020
L – 0.40 0.90 – 0.016 0.035
α– 0° 8° – 0° 8°
N8 8
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STHS237x Package mechanical data
17/20
Figure 8. TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package outline
Note: Drawing is not to scale.
Table 8. TSSOP8 – 8-lead, thin shrink small outline, 3x4.4mm, package
mechanical data
TSSOP8AM
1
8
CP
c
L
EE1
D
A2A
α
eb
4
5
A1
L1
Symb
mm inches
Typ Min Max Typ Min Max
A 1.200 0.0472
A1 0.050 0.150 0.0020 0.0059
A2 1.000 0.800 1.050 0.0394 0.0315 0.0413
b 0.190 0.300 0.0075 0.0118
c 0.090 0.200 0.0035 0.0079
CP 0.100 0.0039
D 3.000 2.900 3.100 0.1181 0.1142 0.1220
e 0.650 – – 0.0256 – –
E 6.400 6.200 6.600 0.2520 0.2441 0.2598
E1 4.400 4.300 4.500 0.1732 0.1693 0.1772
L 0.600 0.450 0.750 0.0236 0.0177 0.0295
L1 1.000 0.0394
α08 08
N8 8
Obsolete Product(s) - Obsolete Product(s)Obsolete Product(s) - Obsolete Product(s)
Part numbering STHS237x
18/20
5 Part numbering
Table 9. Ordering information scheme
1. Contact local ST sales office for availability.
For other options, or for more information on any aspect of this device, please contact the
ST Sales Office nearest you.
Example: STHS 2375A M 6 F
Device type
STHS
Product options
2375A = Standard UVLO, Auto
2375L = Standard UVLO, Latch
2376A = Programmable UVLO, Auto
2376L = Programmable UVLO, Latch
2377A = Legacy UVLO, Auto
2377L = Legacy UVLO, Latch
Package
M = SO8 (150mils width)
DW (1) = TSSOP8 3x4.4mm
Temperature range
6 = –40 to 85°C
Shipping method
F = ECOPACK Package, Tape & Reel
E = ECOPACK Package, Tube
Obsolete Product(s) - Obsolete Product(s)Obsolete Product(s) - Obsolete Product(s)
STHS237x Revision history
19/20
6 Revision history
Table 10. Document revision history
Date Revision Changes
11-Aug-2006 1Initial release.
19-Dec-2006 2 Updated Features and Ta b l e 4 .
24-May-2007 3 Formatting changes, updated Ta b l e 1 , 4, 5, 6.
26-Jul-2007 4 Document status upgraded to full datasheet, updated cover
page and Ta b l e 9 .
Obsolete Product(s) - Obsolete Product(s)Obsolete Product(s) - Obsolete Product(s)
STHS237x
20/20
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