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74VCXH162245T Datasheet

  • 74VCXH162245T

  • Dual 8-bit Bus Transceiver

  • 11頁

  • ETC

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74VCXH162245
LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER (3-STATE)
WITH 3.6V TOLERANT INPUTS AND OUTPUTS
s
s
s
s
s
s
s
s
s
s
s
s
3.6V TOLERANT INPUTS AND OUTPUTS
HIGH SPEED A OUTPUTS:
t
PD
= 3.4 ns (MAX.) at V
CC
= 3.0 to 3.6V
t
PD
= 4.3 ns (MAX.) at V
CC
= 2.3 to 2.7V
SYMMETRICAL IMPEDANCE A OUTPUTS:
|I
OH
| = I
OL
= 12 mA (MIN) at V
CC
= 3.0V
|I
OH
| = I
OL
= 8 mA (MIN) at V
CC
= 2.3V
HIGH SPEED B OUTPUTS:
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
SYMMETRICAL IMPEDANCE B OUTPUTS:
|I
OH
| = I
OL
= 24 mA (MIN) at V
CC
= 3.0V
|I
OH
| = I
OL
= 18 mA (MIN) at V
CC
= 2.3V
POWER-DOWN PROTECTION ON INPUTS
AND OUTPUTS
26
鈩?/div>
SERIES RESITORS IN A PORT OUTPUT
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2.3V to 3.6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 16245
BUS HOLD PROVIDED ON BOTH SIDES
LATCH-UP PERFORMANCE EXCEEDS 300mA
ESD PERFORMANCE:
HBM >2000V; MM > 200V
T
(TSSOP48 Package)
ORDER CODES :
74VCXH162245T
PIN CONNECTION
DESCRIPTION
The VCXH162245 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 2.3 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. The device circuits
is including 26
鈩?/div>
series resistance in the A port
outputs. These resistors permit to reduce line
noise in high speed applications. Bus hold on
data inputs is provided in order to eliminate the
need for external pull-up or pull-down resistor. All
inputs and outputs are equipped with protection
circuits against static discharge, giving them 2KV
ESD immunity and transient excess voltage.
March 1999
1/11

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