HD74HC4538 Datasheet, PDF (1/14 Pages) Hitachi Semiconductor – Dual Precision Retriggerable/Resettable Monostable Multivibrators

HD74HC4538
Dual Precision Retriggerable/Resettable Monostable Multivibrators
REJ03D0654-0200
(Previous ADE-205-543)
Rev.2.00
Mar 30, 2006
Description
Each multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which can be used
as an inhibit input. Also included is a clear input that when taken low resets the one short. The HD74HC4538 is
retriggerable. That is, it may be triggered repeatedly while their outputs are generating a pulse and the pulse will be
extended.
Pulse width stability over a wide range of temperature. The output pulse equation is simply: t_w = 0.7 (R) (C).
Features
• High Speed Operation: t_pd (A or B to Y) = 22 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current
• Ordering Information
Part Name
Package Type
Package Code
(Previous Code)
Package
Abbreviation
HD74HC4538P
DILP-16 pin
PRDP0016AE-B
P
(DP-16FV)
HD74HC4538FPEL SOP-16 pin (JEITA)
PRSP0016DH-B
(FP-16DAV)
FP
PRSP0016DG-A
HD74HC4538RPEL SOP-16 pin (JEDEC)
(FP-16DNV)
RP
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
—
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
Function Table
Inputs
C_D
A
B
L
X
X
H
L
H
H
H
H
H
L
X : Irrelevant
Outputs
Q
Q
L
H
Not triggered
Not triggered
Rev.2.00 Mar 30, 2006 page 1 of 13