器件名称:
74HC4538
功能描述:
Dual Retriggerable Monostable Multivibrator
文件大小:
119.29KB 共10页
简 介:
MM74HC4538 Dual Retriggerable Monostable Multivibrator February 1984 Revised August 2000 MM74HC4538 Dual Retriggerable Monostable Multivibrator General Description The MM74HC4538 high speed monostable multivibrator (one shots) is implemented in advanced silicon-gate CMOS technology. They feature speeds comparable to low power Schottky TTL circuitry while retaining the low power and high noise immunity characteristic of CMOS circuits. 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 shot. The MM74HC4538 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 and supply is achieved using linear CMOS techniques. The output pulse equation is simply: PW = 0.7(R)(C) where PW is in seconds, R is in ohms, and C is in farads. This device is pin compatible with the CD4528, and the CD4538 one shots. All inputs are protected from damage due to static discharge by diodes to VCC and ground. Features s Schmitt trigger on A and B inputs s Wide power supply range: 2–6V s Typical trigger propagation delay: 32 ns s Fanout of 10 LS-TTL loads s Low input current: 1 A max Ordering Code: Order Number MM74HC4538M MM74HC4538SJ MM74HC4538N Package Number M16A M16D N16E Package Description 16-Lead Small Outline……
