74LVX163 Datasheet, PDF (1/8 Pages) Fairchild Semiconductor – Low Voltage Synchronous Binary Counter with Synchronous Clear

December 1996
74LVX163
Low Voltage Synchronous Binary Counter with
Synchronous Clear
General Description
The LVX163 is a synchronous modulo-16 binary counter
This device is synchronously presettable for application in
programmable dividers and has two types of Count Enable
inputs plus a Terminal Count output for versatility in forming
multistage counters The CLK input is active on the rising
edge Both PE and CLR inputs are active on low logic lev-
els Presetting is synchronous to rising edge of CLK and the
Clear function of the LVX163 is synchronous to CLK Two
enable inputs (ENP and ENT) and Carry Output are provid-
ed to enable easy cascading of counters which facilitates
easy implementation of n-bit counters without using external
gates
The inputs tolerate voltages up to 7V allowing the interface
of 5V systems to 3V systems
Features
Y _{Input voltage level translation from 5V to 3V}
Y _{Ideal for low power low noise 3 3V applications}
Y _{Available in SOIC JEDEC SOIC EIAJ and TSSOP}
packages
Y _{Guaranteed simultaneous switching noise and dynamic}
threshold performance
Logic Symbols
IEEE IEC
Connection Diagram
Pin Assignment for
TSSOP and SOIC
TL F 12157–1
TL F 12157 – 2
Order Number
See NS Package
Number
SOIC JEDEC
74LVX163M
74LVX163MX
M16A
SOIC EIAJ
74LVX163SJ
74LVX163SJX
M16D
TSSOP
74LVX163MTC
74LVX163MTCX
MTC16
TL F 12157 – 3
Pin
Names
CEP
CET
CP
MR
P₀ – P₃
PE
Q₀ – Q₃
TC
Description
Count Enable Parallel Input
Count Enable Trickle Input
Clock Pulse Input
Synchronous Master Reset Input
Parallel Data Inputs
Parallel Enable Inputs
Flip-Flop Outputs
Terminal Count Output
C1996 National Semiconductor Corporation TL F 12157
RRD-B30M17 Printed in U S A
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