ZSM380C Zetex Semiconductors, ZSM380C Datasheet

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ZSM380C

Manufacturer Part Number
ZSM380C
Description
SUPPLY VOLTAGE MONITOR
Manufacturer
Zetex Semiconductors
Datasheet
1.ZSM380C.pdf (5 pages)
SUPPLY VOLTAGE
MONITOR
ISSUE 1 – APRIL 1996
DEVICE DESCRIPTION
The ZSM380 is a three terminal under
vo l ta ge mo ni t or ci rc ui t f or use i n
microprocessor systems. The threshold
voltage of the device has been set to 3.8 volts
making it ideal for 5 volt circuits.
Included in the device is a precise voltage
reference and a comparator with built in
hysteresis to prevent erratic operation. The
ZSM380 features an open collector output
capable of sinking at least l0mA which only
requires a single external resistor to
interface to following circuits.
Operation of the device is guaranteed from
one volt upwards, from this level to the
device threshold voltage the output is held
low providing a power on reset function.
Should the supply voltage, once established,
at any time drop below the threshold level
then the output again will pull low.
The device is available in a TO92 package for
through hole applications as well as SO8 and
SOT223 for surface mount requirements.
SCHEMATIC DIAGRAM
4-349
FEATURES
APPLICATIONS
SO8, SOT223 and TO92 packages
Power on reset generator
Automatic reset generation
Low standby current
Guaranteed operation from 1 volt
Wide supply voltage range
delay capacitor
3.8 volt threshold for 5 volt logic
20mV hysteresis prevents erratic operation
Microprocessor systems
Computers
Computer peripherals
Instrumentation
Automotive
Battery powered equipment
Internal clamp diode to discharge
ZSM380

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ZSM380C Summary of contents

Page 1

SUPPLY VOLTAGE MONITOR ISSUE 1 – APRIL 1996 DEVICE DESCRIPTION The ZSM380 is a three terminal under use i n microprocessor systems. The threshold voltage of ...

Page 2

ZSM380 ABSOLUTE MAXIMUM RATING Input Supply Voltage Offstate Output Voltage Onstate Output Sink Current( ) Note 1 Clamp Diode Forward Current( ) Note 1 Operating Junction Temperature Operating Temperature Storage Temperature TEST CONDITIONS (T =25°C for typical values, T amb ...

Page 3

TYPICAL CHARACTERISTICS 500 400 85°C 25°C -40°C 300 200 100 Input Voltage (V) Input Current vs. Input Voltage 50 V =3. -40°C 25°C 20 85° 0.4 0.8 1.2 ...

Page 4

ZSM380 TIMING DIAGRAM Vcc Threshold Voltage 1 V Output AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA ...

Page 5

... SO8 Package Suffix – N8 Top View TO92 Package Suffix – C Bottom View ORDERING INFORMATION Part Number Package ZSM380N8 SO8 ZSM380G SOT223 ZSM380C TO92 SOT223 Package Suffix – G Top View – Pin 4 floating or connected to pin 2 Part Mark ZSM380 ZSM380 ZSM380 4-353 ZSM380 ...

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