Part # M74HC4538 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Dual retriggerable monostable multivibrator


Part Details:

M74HC4538 Dual retriggerable monostable multivibrator Features High speed: tPD = 25 ns (typ.) at VCC = 6 V Low power dissipation standby state: SO-16 ICC = 4 A (max.) at TA = 25 °Cactive state: DIP-16 ICC = 200 A (max.) at VCC = 6 V High noise immunity: VNIH = VNIL = 28 % VCC (min.) Symmetrical output impedance: |I TSSOP16 OH| = IOL = 4 mA (min.) Balanced propagation delays: tPLH tPHL Wide operating voltage range: Description VCC (opr) = 2 to 6 V The M74HC4538 is a high speed CMOS monostable Wide output pulse width range: multivibrator fabricated with silicon gate C2MOS tWOUT = 120 ns ~ 60 s over at VCC = 4.5 V technology. Pin and function compatible with Each multivibrator features both a negative A, and a 74 series 4538 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 Package Packaging M74HC4538B1R DIP-16 Tube M74HC4538RM13TR SO-16 Tape and reel M74HC4538TTR TSSOP16 Tape and reel May 2008 Rev 2 1/18 www.st.com 18


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M74HC4538.pdf Datasheet