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74AC157B Datasheet

  • 74AC157B

  • QUAD 2 CHANNEL MULTIPLEXER

  • 84.14KB

  • 9頁(yè)

  • STMICROELECTRONICS   STMICROELECTRONICS

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74AC157
QUAD 2 CHANNEL MULTIPLEXER
PRELIMINARY DATA
s
s
s
s
s
s
s
s
s
HIGH SPEED: t
PD
= 4 ns (TYP.) at V
CC
= 5V
LOW POWER DISSIPATION:
I
CC
= 8
碌A(chǔ)
(MAX.) at T
A
= 25
o
C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28% V
CC
(MIN.)
50鈩?TRANSMISSION LINE DRIVING
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24 mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
鈮?/div>
t
PHL
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 157
IMPROVED LATCH-UP IMMUNITY
B
M
(Plastic Package)
(Micro Package)
ORDER CODES :
74AC157B
74AC157M
DESCRIPTION
The AC157 is an high-speed CMOS QUAD
2-CHANNEL MULTIPLEXER fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS 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
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.
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
1/9

74AC157B 產(chǎn)品屬性

  • STMicroelectronics

  • Multiplexer

  • AC

  • 8 / 4

  • 8 ns at 3.3 V, 6.5 ns at 5 V

  • 6 V

  • 2 V

  • + 125 C

  • Through Hole

  • PDIP-16

  • Tube

  • - 55 C

  • 8

  • 4

  • 1000

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