54LCX16374
Low Voltage 16-Bit D Flip-Flop with 5V Tolerant Inputs
and Outputs
General Description
The LCX16374 contains sixteen non-inverting D flip-flops
with TRI-STATE
®
outputs and is intended for bus oriented
applications. The device is byte controlled. A buffered clock
(CP) and Output Enable (OE) are common to each byte and
can be shorted together for full 16-bit operation.
The LCX16374 is designed for low voltage (3.3V) V
CC
appli-
cations with capability of interfacing to a 5V signal environ-
ment.
The LCX16374 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation.
Features
n 5V tolerant inputs and outputs
n Power down high impedance inputs and outputs
n Supports live insertion/withdrawal
n 2.0V–3.6V V
CC
supply operation
n ±24 mA output drive
n Implements patented noise/EMI reduction circuitry
n Functionally compatible with the 54 series 16374
n ESD performance:
Human body model > 2000V
Machine model > 200V
n Standard Microcircuit Drawing (SMD) 5962-99535
Ordering Code
Order Number Package Number Package Description
54LCX16374W-QML WA48A 48-Lead Ceramic Flatpack
Logic Symbol
Pin Descriptions
Pin Description
Names
OE
n
Output Enable Input (Active Low)
CP
n
Clock Pulse Input
I
0
–I
15
Inputs
O
0
–O
15
Outputs
Connection Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
DS101199-1
Pin Assignment for
Cerpack
DS101199-2
July 1999
54LCX16374
Low
V
oltage
16-Bit
D
Flip-Flop
with
5V
T
olerant
Inputs
and
Outputs
© 1999 National Semiconductor Corporation DS101199 www.national.com