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74VCX16245T Datasheet

  • 74VCX16245T

  • Dual 8-bit Bus Transceiver

  • 10頁

  • ETC

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74VCX16245
LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER (3-STATE)
WITH 3.6V TOLERANT INPUTS AND OUTPUTS
s
s
s
s
s
s
s
s
3.6V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED:
t
PD
= 2.5 ns (MAX.) at V
CC
= 3.0 to 3.6V
t
PD
= 3.2 ns (MAX.) at V
CC
= 2.3 to 2.7V
t
PD
= 5.7 ns (MAX.) at V
CC
= 1.8V
POWER-DOWN PROTECTION ON INPUTS
AND OUTPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24 mA (MIN) at V
CC
= 3.0V
|I
OH
| = I
OL
= 18 mA (MIN) at V
CC
= 2.3V
|I
OH
| = I
OL
= 6 mA (MIN) at V
CC
= 1.8V
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 1.8V to 3.6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16245
LATCH-UP PERFORMANCE EXCEEDS 300mA
ESD PERFORMANCE:
HBM >2000V; MM > 200V
T
(TSSOP48 Package)
ORDER CODES :
74VCX16245T
PIN CONNECTION
DESCRIPTION
The VCX16245 is a low voltage CMOS 16-BIT
BUS TRANSCEIVER (3-STATE) fabricated with
sub-micron silicon gate and five layer metal wiring
C
2
MOS technology. It is ideal for low power and
very high speed 1.8 to 3.6V applications; it can
be interfaced to 3.6V signal enviroment for both
inputs and outputs.
This IC is intended for two-way asynchronous
communication beetwen data buses; the direction
of data trasmission is determined by DIR input.
The two enable inputs nG can be used to disable
the device so that the buses are effectively
isolated.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
IT IS PROHIBITED TO APPLY A SIGNAL TO A
TERMINAL WHEN IT IS IN OUTPUT MODE
AND WHEN A BUS THERMINAL IS FLOATING
(HIGH IMPEDANCE STATE) IT IS REQUESTED
TO FIX THE INPUT LEVEL BY MEANS OF
EXTERNAL PULL DOWN OR PULL UP
RESISTOR.
March 1999
1/10

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