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74ACT157M Datasheet(Hoja de datos) 1 Page - STMicroelectronics

No. de Pieza. 74ACT157M
Descripción  QUAD 2 CHANNEL MULTIPLEXER
Descarga  10 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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1/10
April 2001
s
HIGH SPEED: tPD = 5.5 ns (TYP.) at VCC = 5V
s
LOW POWER DISSIPATION:
ICC = 4µA(MAX.) at TA=25°C
s
COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.), VIL = 0.8V (MAX.)
s
50
Ω TRANSMISSION LINE DRIVING
CAPABILITY
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
OPERATING VOLTAGE RANGE:
VCC (OPR) = 4.5V to 5.5V
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 157
s
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74ACT157 is an advanced high-speed CMOS
QUAD 2-CHANNEL MULTIPLEXER fabricated
with sub-micron silicon gate and double-layer
metal wiring C2MOS tecnology.
It consists of four 2-input digital multiplexer with
common SELECT and STROBE inputs. It is a
non-inverting multiplexer. When the STROBE
input is held high selection of data is inhibit and all
the outputs become low. The SELECT decoding
determines whether the A or B inputs get routed to
their corresponding Y outputs.
The device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOS output voltage levels.
All
inputs
and
outputs
are
equipped
with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74ACT157
QUAD 2 CHANNEL MULTIPLEXER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
DIP
74ACT157B
SOP
74ACT157M
74ACT157MTR
TSSOP
74ACT157TTR
TSSOP
DIP
SOP




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