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M74HC4538B1R Folha de dados(PDF) 1 Page - STMicroelectronics |
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M74HC4538B1R Folha de dados(HTML) 1 Page - STMicroelectronics |
1 / 18 page May 2008 Rev 2 1/18 18 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 =6V ■ 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 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. SO-16 TSSOP16 DIP-16 Table 1. Device summary Order code Package Packaging M74HC4538B1R DIP-16 Tube M74HC4538RM13TR SO-16 Tape and reel M74HC4538TTR TSSOP16 Tape and reel www.st.com |
Nº de peça semelhante - M74HC4538B1R |
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Descrição semelhante - M74HC4538B1R |
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