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74LCXH16245 Datasheet

LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER

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74LCXH16245
LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER
WITH 5V TOLERANT INPUTS AND OUTPUT (3-STATE)
s 5V TOLERANT INPUTS AND OUTPUTS
s HIGH SPEED:
tPD = 4.5 ns (MAX.) at VCC = 3V
s POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24mA (MIN) at VCC = 3V
s PCI BUS LEVELS GUARANTEED AT 24 mA
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
s OPERATING VOLTAGE RANGE:
VCC(OPR) = 2.0V to 3.6V (1.5V Data
Retention)
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES H16245
s BUS HOLD PROVIDED ON BOTH SIDES
s LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
s ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
DESCRIPTION
The 74LCXH16245 is a low voltage CMOS 16 BIT
BUS TRANSCEIVER (3-STATE) fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology. It is ideal for low power
and high speed 3.3V applications; it can be
interfaced to 5V signal environment for both inputs
and outputs.
This IC is intended for two-way asynchronous
communication between data buses; the direction
of data transmission is determined by DIR input.
The two enable inputs nG can be used to disable
the device so that the buses are effectively isolat-
ed.
Bus hold on data inputs is provided in order to
eliminate the need for external pull-up or
pull-down resistor.
It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power con-
sumption.
All inputs and outputs are equipped with protec-
tion circuits against static discharge, giving them
2KV ESD immunity and transient excess voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.
July 2003
TSSOP
ORDER CODES
PACKAGE
TSSOP
TUBE
PIN CONNECTION
T&R
74LCXH16245TTR
1/10


STMicroelectronics Electronic Components Datasheet

74LCXH16245 Datasheet

LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER

No Preview Available !

74LCXH16245
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL NAME AND FUNCTION
1
2, 3, 5, 6, 8, 9,
11, 12
13, 14, 16, 17,
19, 20, 22, 23
24
25
36, 35, 33, 32,
30, 29, 27, 26
47, 46, 44, 43,
41, 40, 38, 38
48
4, 10, 15, 21,
28, 34, 39, 45
7, 18, 31, 42
1DIR
1B1 to 1B8
2B1 to 2B8
2DIR
2G
2A1 to 2A8
1A1 to 1A8
1G
GND
VCC
Directional Control
Data Inputs/Outputs
Data Inputs/Outputs
Directional Control
Output Enable Input
Data Inputs/Outputs
Data Inputs/Outputs
Output Enable Input
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
INPUTS
G DIR
LL
LH
HX
X : Don‘t Care
Z : High Impedance
FUNCTION
OUTPUT
A BUS B BUS
OUTPUT INPUT
INPUT OUTPUT
ZZ
Yn
A=B
B=A
Z
IEC LOGIC SYMBOLS
2/10


Part Number 74LCXH16245
Description LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER
Maker STMicroelectronics
Total Page 10 Pages
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