74HC4538PW-Q100 Просмотр технического описания (PDF) - NXP Semiconductors.
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74HC4538PW-Q100 Datasheet PDF : 23 Pages
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74HC4538-Q100; 74HCT4538-Q100
Dual retriggerable precision monostable multivibrator
Rev. 1 — 2 August 2012
Product data sheet
1. General description
The 74HC4538-Q100; 74HCT4538-Q100 are high-speed Si-gate CMOS devices and are
pin compatible with Low-power Schottky TTL (LSTTL). They are specified in compliance
with JEDEC standard no. 7A.
The 74HC4538-Q100; 74HCT4538-Q100 are dual retriggerable-resettable monostable
multivibrators. Each multivibrator has:
• an active LOW trigger/retrigger input (nA)
• an active HIGH trigger/retrigger input (nB)
• an overriding active LOW direct reset input (nCD)
• an output (nQ) and its complement (nQ)
• two pins (nREXT/CEXT and nCEXT) for connecting the external timing components
CEXT and REXT
Typical pulse width variation over the specified temperature range is 0.2 %.
The multivibrator may be triggered by either the positive or the negative edges of the input
pulse. The duration and accuracy of the output pulse are determined by the external
timing components CEXT and REXT. The output pulse width (tW) is equal to
0.7 REXT CEXT. The linear design techniques guarantee precise control of the output
pulse width. A LOW level at nCD terminates the output pulse immediately. Schmitt trigger
action on pins nA and nB makes the circuit highly tolerant of slower rise and fall times.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from 40 C to +85 C and from 40 C to +125 C
Tolerant of slow trigger rise and fall times
Separate reset inputs
Triggering from falling or rising edge
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 )
Multiple package options
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