74VCXH16373 Low Voltage 16-Bit Transparent Latch with Bushold
January 2000
Revised March 2000
74VCXH16373
Low Voltage 16-Bit Transparent Latch with Bushold
General Description
The VCXH16373 contains sixteen non-inverting latches
with 3-STATE outputs and is intended for bus oriented
applications. The device is byte controlled. The flip-flops
appear to be transparent to the data when the Latch enable
(LE) is HIGH. When LE is LOW, the data that meets the
setup time is latched. Data appears on the bus when the
Output Enable (OE) is LOW. When OE is HIGH, the out-
puts are in a high impedance state.
The VCXH16373 data inputs include active bushold cir-
cuitry, eliminating the need for external pull-up resistors to
hold unused or floating data inputs at a valid logic level.
The 74VCXH16373 is designed for low voltage (1.65V to
3.6V) V
CC
applications with output compatibility up to 3.6V.
The 74VCXH16373 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
s
1.65V鈥?.6V V
CC
supply operation
s
3.6V tolerant control inputs and outputs
s
Bushold on data inputs eliminates the need for external
pull-up/pull-down resistors
s
t
PD
(I
n
to O
n
)
3.0 ns max for 3.0V to 3.6V V
CC
3.4 ns max for 2.3V to 2.7V V
CC
6.8 ns max for 1.65V to 1.95V V
CC
s
Static Drive (I
OH
/I
OL
)
鹵24
mA @ 3.0V V
CC
鹵18
mA @ 2.3V V
CC
鹵6
mA @ 1.65V V
CC
s
Uses patented noise/EMI reduction circuitry
s
Latch-up performance exceeds 300 mA
s
ESD performance:
Human body model
>
2000V
Machine model
>
200V
Ordering Code:
Ordering Number
74VCXH16373MTD
Package
Number
MTD48
Package Description
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter 鈥淴鈥?to the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
OE
n
LE
n
I
0
鈥揑
15
O
0
鈥揙
15
Description
Output Enable Input (Active LOW)
Latch Enable Input
Bushold Inputs
Outputs
漏 2000 Fairchild Semiconductor Corporation
DS500229
www.fairchildsemi.com
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