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M74HC4538TTR Folha de dados(PDF) 1 Page - STMicroelectronics

Nome de Peças M74HC4538TTR
Descrição Electrónicos  Dual retriggerable monostable multivibrator
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC4538TTR Folha de dados(HTML) 1 Page - STMicroelectronics

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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


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