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74LVX257 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. 74LVX257
Description  LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER (3-STATE) WITH 5V TOLERANT INPUTS
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74LVX257 Datasheet(HTML) 1 Page - STMicroelectronics

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July 2001
s
HIGH SPEED:
tPD=5.8ns (TYP.) at VCC = 3.3V
s
5V TOLERANT INPUTS
s
POWER-DOWN PROTECTION ON INPUTS
s
INPUT VOLTAGE LEVEL:
VIL = 0.8V, VIH = 2V at VCC =3V
s
LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA=25°C
s
LOW NOISE:
VOLP = 0.3V (TYP.) at VCC =3.3V
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4 mA (MIN) at VCC =3V
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 3.6V (1.2V Data Retention)
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 257
s
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LVX257 is a low voltage CMOS QUAD 2
CHANNEL MULTIPLEXER (3-STATE) fabricated
with sub-micron silicon gate and double-layer
metal wiring C2MOS technology. It is ideal for low
power, battery operated and low noise 3.3V
applications.
It is composed of four independent 2-channel
multiplexers with common SELECT and ENABLE
(OE) INPUT. The 74LVX257 is a non-inverting
multiplexer. When the ENABLE INPUT is
held
"High", all outputs become in 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. It
combines high speed performance with the true
CMOS low power consumption.
All
inputs
and
outputs
are
equipped
with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74LVX257
LOW VOLTAGE CMOS QUAD 2 CHANNEL MULTIPLEXER
(3-STATE) WITH 5V TOLERANT INPUTS
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
SOP
74LVX257M
74LVX257MTR
TSSOP
74LVX257TTR
TSSOP
SOP


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