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74AC257TTR Datasheet

  • 74AC257TTR

  • 2-Input Digital Multiplexer

  • 11頁

  • ETC

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74AC257
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
s
s
s
s
s
s
s
s
s
HIGH SPEED: t
PD
= 4.5ns (TYP.) at V
CC
= 5V
LOW POWER DISSIPATION:
I
CC
= 4碌A(MAX.) at T
A
=25擄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
= 24mA (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 257
IMPROVED LATCH-UP IMMUNITY
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
DIP
SOP
TSSOP
TUBE
74AC257B
74AC257M
T&R
74AC257MTR
74AC257TTR
DESCRIPTION
The 74AC257 is an advanced high-speed CMOS
QUAD 2-CHANNEL MULTIPLEXER (3-STATE)
fabricated with sub-micron silicon gate and
double-layer metal wiring C
2
MOS tecnology.
It is composed of four independent 2-channel
multiplexer with common SELECT and ENABLE
(OE) inputs. It is a non-inverting multiplexer. When
the OE input is held HIGH,all the output become in
high impedance state. If SELECT input is held
LOW, 鈥滱鈥?data is selected, when SELECT input is
held HIGH, 鈥滲鈥?data is chosen.
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
April 2001
1/11

74AC257TTR 產(chǎn)品屬性

  • 1

  • 集成電路 (IC)

  • 邏輯 - 信號開關，多路復用器，解碼器

  • 74AC

  • 多路復用器

  • 4 x 2:1

  • 1

  • 24mA，24mA

  • 單電源

  • 2 V ~ 6 V

  • -55°C ~ 125°C

  • 表面貼裝

  • 16-TSSOP（0.173"，4.40mm 寬）

  • 16-TSSOP

  • Digi-Reel®

  • 497-7073-6

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