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PDF 74ACT157 Data sheet ( Hoja de datos )
| Número de pieza | 74ACT157 | |
| Descripción | QUAD 2 CHANNEL MULTIPLEXER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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74ACT157
QUAD 2 CHANNEL MULTIPLEXER
s HIGH SPEED: tPD = 5.5 ns (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 8 µA (MAX.) at TA = 25 oC
s COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN), VIL = 0.8V (MAX)
s 50Ω TRANSMISSION LINE DRIVING
CAPABILITY
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24 mA (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 ACT157 is an high-speed CMOS QUAD
2-CHANNEL MULTIPLEXER fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology. It is ideal for low
power applications maintaining high speed
operation similar to equivalent Bipolar Schottky
TTL.
It consists of four 2-input digital multiplexers with
PRELIMINARY DATA
BM
(Plastic Package)
(Micro Package)
ORDER CODES :
74ACT157B
74ACT157M
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.
PIN CONNECTION AND IEC LOGIC SYMBOLS
May 1997
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1 page  
WAVEFORM 1: PROPAGATION DELAYS FOR INVERTING CONDITIONS
74ACT157
WAVEFORM 2: PROPAGATION DELAYS FOR NON-INVERTING CONDITIONS
5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet 74ACT157.PDF ] | |
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