器件名称:
M74HC4538RM13TR
功能描述:
Dual retriggerable monostable multivibrator
文件大小:
589.82KB 共18页
简 介:
M74HC4538 Dual retriggerable monostable multivibrator Features ■ ■ High speed: tPD = 25 ns (typ.) at VCC = 6 V Low power dissipation standby state: ICC = 4 μA (max.) at TA = 25 °C active state: ICC = 200 μA (max.) at VCC = 6 V High noise immunity: VNIH = VNIL = 28 % VCC (min.) Symmetrical output impedance: |IOH| = IOL = 4 mA (min.) Balanced propagation delays: tPLH tPHL Wide operating voltage range: VCC (opr) = 2 to 6 V Wide output pulse width range: tWOUT = 120 ns ~ 60 s over at VCC = 4.5 V Pin and function compatible with 74 series 4538 TSSOP16 SO-16 DIP-16 ■ ■ ■ ■ ■ ■ Description The M74HC4538 is a high speed CMOS monostable multivibrator fabricated with silicon gate C2MOS technology. Each multivibrator features both a negative A, and a positive B, edge 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 monostable multivibrators are retriggerable. That is, they 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 in Omhs and C is in Farads. All the inputs are equipped with protection circuits against static discharge and transient excess voltage. Table 1. Device summary Order code M74HC4538B1R Package DIP-16 SO-16 TSSOP16 Packaging Tube Tape and……
