Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

74VHCT257A Datasheet(PDF) 1 Page - STMicroelectronics

Part No. 74VHCT257A
Description  QUAD 2 CHANNEL MULTIPLEXER 3-STATE
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHCT257A Datasheet(HTML) 1 Page - STMicroelectronics

  74VHCT257A Datasheet HTML 1Page - STMicroelectronics 74VHCT257A Datasheet HTML 2Page - STMicroelectronics 74VHCT257A Datasheet HTML 3Page - STMicroelectronics 74VHCT257A Datasheet HTML 4Page - STMicroelectronics 74VHCT257A Datasheet HTML 5Page - STMicroelectronics 74VHCT257A Datasheet HTML 6Page - STMicroelectronics 74VHCT257A Datasheet HTML 7Page - STMicroelectronics 74VHCT257A Datasheet HTML 8Page - STMicroelectronics 74VHCT257A Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 10 page
background image
74VHCT257A
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
PRELIMINARY DATA
March 2000
s
HIGH SPEED: tPD = 5.8 ns (TYP.) at VCC =5V
s
LOWPOWER DISSIPATION:
ICC =4
µA (MAX.) at TA =25 oC
s
COMPATIBLE WITH TTL OUTPUTS:
VIH =2V(MIN), VIL = 0.8V (MAX)
s
POWER DOWN PROTECTION ON INPUTS &
OUTPUTS
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|= IOL = 8 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 257
s
IMPROVED LATCH-UP IMMUNITY
s
LOWNOISE: VOLP = 0.8V (Max.)
DESCRIPTION
The 74VHCT257A is an advanced high-speed
CMOS QUAD
2
CHANNEL
MULTIPLEXER
(3-STATE) fabricated with sub-micron silicon gate
and
double-layer
metal
wiring
C
2MOS
technology.
It is composed of four independent 2 channel
multiplexers with common SELECT and ENABLE
INPUT.
The 74VHCT257A is a non inverting multiplexer.
When the ENABLE INPUT is held ”High”, all
outputs
become
high
impedance
state.
If
SELECT INPUT is held ”Low”, ”A” data is
selected, when SELECT INPUT is ”High”, ”B”
data is chosen.
Power down protection is provided on all inputs
and output and 0 to 7V can be accepted on
inputs with no regard to the supply voltage. This
device can be used to interface 5V to 3V.
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
®
SOP
TSSOP
ORDER CODES
PACKAGE
T UBE
T & R
SOP
74VHCT257AM
74VHCT257AMTR
TSSOP
74VHCT257ATTR
1/9


Html Pages

1  2  3  4  5  6  7  8  9  10 


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn