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MC74HC4538A

Motorola
Part Number MC74HC4538A
Manufacturer Motorola
Description Dual Precision Monostable Multivibrator
Published Aug 3, 2005
Detailed Description MOTOROLA SEMICONDUCTOR TECHNICAL DATA Dual Precision Monostable Multivibrator (Retriggerable, Resettable) The MC54/74H...
Datasheet PDF File MC74HC4538A PDF File

MC74HC4538A
MC74HC4538A

Overview
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Dual Precision Monostable Multivibrator (Retriggerable, Resettable) The MC54/74HC4538A 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, Rx and Cx.
The device has a reset function which forces the Q output low and the Q output high, regardless of the state of the output pulse circuitry.
• 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.
0 µA • 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 MC54/74HC4538A 16 1 J SUFFIX CERAMIC PACKAGE CASE 620–10 16 1 N SUFFIX PLASTIC PACKAGE CASE 648–08 16 1 D SUFFIX SOIC PACKAGE CASE 751B–05 ORDERING INFORMATION MC54HCXXXXAJ MC74HCXXXXAN MC74HCXXXXAD Ceramic Plastic SOIC PIN ASSIGNMENT GND CX1/RX1 RESET 1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC GND CX2/RX2 RESET 2 A2 B2 Q2 Q2 LOGIC DIAGRAM CX1 1 4 TRIGGER A1 INPUTS B1 5 3 15 TRIGGER INPUTS A2 B2 12 11 14 10 9 Reset Q2 Q2 H H H H H H L 2 6 7 Q1 Q1 CX2 RX2 VCC RX1 VCC A1 B1 Q1 Q1 GND FUNCTION TABLE Inputs A L X H L,H, L X X L X H L,H, X X Not Triggered Not Triggered Not Triggered Not Triggered L H Not Triggered B H Outputs Q Q...


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