MC74HC4538A Series

Dual Precision Monostable Multivibrator

Catalog

Dual Precision Monostable Multivibrator

Part	Propagation Delay	Mounting Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Logic Type	Package / Case	Package / Case	Package / Case	Independent Circuits	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case [x]	Package / Case [y]
ON Semiconductor MC74HC4538AFELG	30 ns	Surface Mount	5.2 mA	5.2 mA	2 V	6 V	16-SOEIAJ	Monostable	0.209 "	16-SOIC	5.3 mm	2	-55 °C	125 °C
ON Semiconductor MC74HC4538ADG	30 ns	Surface Mount	5.2 mA	5.2 mA	2 V	6 V	16-SOIC	Monostable		16-SOIC		2	-55 °C	125 °C	0.154 in	3.9 mm
ON Semiconductor MM74HC4538M	26 ns	Surface Mount	5.2 mA	5.2 mA	2 V	6 V	16-SOIC	Monostable		16-SOIC		2	-40 °C	85 °C	0.154 in	3.9 mm
ON Semiconductor MC74HC4538ADTR2G	30 ns	Surface Mount	5.2 mA	5.2 mA	2 V	6 V	16-TSSOP	Monostable		16-TSSOP		2	-55 °C	125 °C	0.173 in	4.4 mm
ON Semiconductor MC74HC4538AF	30 ns	Surface Mount	5.2 mA	5.2 mA	2 V	6 V	16-SOEIAJ	Monostable	0.209 "	16-SOIC	5.3 mm	2	-55 °C	125 °C
ON Semiconductor MM74HC4538N	26 ns	Through Hole	5.2 mA	5.2 mA	2 V	6 V	16-PDIP	Monostable	0.3 in	16-DIP	7.62 mm	2	-40 °C	85 °C
ON Semiconductor MC74HC4538AFEL	30 ns	Surface Mount	5.2 mA	5.2 mA	2 V	6 V	16-SOEIAJ	Monostable	0.209 "	16-SOIC	5.3 mm	2	-55 °C	125 °C

Catalog

Dual Precision Monostable Multivibrator

Key Features

• Unlimited Rise and Fall Times Allowed on the Trigger Inputs

• Output Pulse is Independent of the Trigger Pulse Width

• +/- 10% Guaranteed Pulse Width Variation from Part to Part (Using the Same Test Jig)

• Output Drive Capability: 10 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS and TTL

• Operating Voltage Range: 3.0 to 6.0 V

• Low Input Current: 1.0mA

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance with the Requirements Defined by JEDEC Standard No. 7A

• Chip Complexity: 145 FETs or 36 Equivalent Gates

• Pb-Free Packages are Available*

Description

The MC74HC4538A is identical in pinout to the MC14538B. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.This dual monostable multivibrator may be triggered by either the positive or the negative edge of an input pulse, and produces a precision output pulse over a wide range of pulse widths. Because the device has conditioned trigger inputs, there are no trigger-input rise and fall time restrictions. The output pulse width is determined by the external timing components, Rxand Cx. The device has a reset function which forces the Q output low and the Qbar output high, regardless of the state of the output pulse circuitry.