DataSheet39.com

What is 74VHC257T?

This electronic component, produced by the manufacturer "STMicroelectronics", performs the same function as "QUAD 2 CHANNEL MULTIPLEXER 3-STATE".


74VHC257T Datasheet PDF - STMicroelectronics

Part Number 74VHC257T
Description QUAD 2 CHANNEL MULTIPLEXER 3-STATE
Manufacturers STMicroelectronics 
Logo STMicroelectronics Logo 


There is a preview and 74VHC257T download ( pdf file ) link at the bottom of this page.





Total 9 Pages



Preview 1 page

No Preview Available ! 74VHC257T datasheet, circuit

® 74VHC257
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
s HIGH SPEED: tPD = 3.7 ns (TYP.) at VCC = 5V
s LOWPOWER DISSIPATION:
ICC = 4 µA (MAX.) at TA = 25 oC
s HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
s POWER DOWN PROTECTION ON INPUTS
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8 mA (MIN)
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
s OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V 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 74VHC257 is an advanced high-speed
CMOS QUAD 2 CHANNEL MULTIPLEXER
(3-STATE) fabricated with sub-micron silicon gate
and double-layer metal wiring C2MOS
technology.
It is composed of four independent 2 channel
multiplexers with common SELECT and ENABLE
INPUT.
M
(Micro Package)
T
(TSSOP Package)
ORDER CODES :
74VHC257M
74VHC257T
The 74VHC257 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 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
June 1999
1/9

line_dark_gray
74VHC257T equivalent
TEST CIRCUIT
74VHC257
TEST
tPLH, tPHL
tPZL, tPLZ
tPZH, tPHZ
CL = 15/50 pF or equivalent (includes jig and probe capacitance)
RL = R1 = 1Korequivalent
RT = ZOUT of pulse generator (typically 50)
SW IT CH
Open
VCC
GND
WAVEFORM 1: PROPAGATION DELAYS FOR INVERTING CONDITIONS (f=1MHz; 50% duty cycle)
5/9


line_dark_gray

Preview 5 Page


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 74VHC257T electronic component.


Information Total 9 Pages
Link URL [ Copy URL to Clipboard ]
Download [ 74VHC257T.PDF Datasheet ]

Share Link :

Electronic Components Distributor


An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists.


SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Newark Chip One Stop


Featured Datasheets

Part NumberDescriptionMFRS
74VHC257The function is QUAD 2 CHANNEL MULTIPLEXER 3-STATE. STMicroelectronicsSTMicroelectronics
74VHC257MThe function is QUAD 2 CHANNEL MULTIPLEXER 3-STATE. STMicroelectronicsSTMicroelectronics
74VHC257TThe function is QUAD 2 CHANNEL MULTIPLEXER 3-STATE. STMicroelectronicsSTMicroelectronics

Semiconductors commonly used in industry:

1N4148   |   BAW56   |   1N5400   |   NE555   |  

LM324   |   BC327   |   IRF840  |   2N3904   |  



Quick jump to:

74VH     1N4     2N2     2SA     2SC     74H     BC     HCF     IRF     KA    

LA     LM     MC     NE     ST     STK     TDA     TL     UA    



Privacy Policy   |    Contact Us     |    New    |    Search