IDT74FCT161T Datasheet, PDF (1/7 Pages) Integrated Device Technology – FAST CMOS SYNCHRONOUS PRESETTABLE BINARY COUNTERS

Integrated Device Technology, Inc.
FAST CMOS
SYNCHRONOUS
PRESETTABLE
BINARY COUNTERS
IDT54/74FCT161T/AT/CT
IDT54/74FCT163T/AT/CT
FEATURES:
• Std., A and C speed grades
• Low input and output leakage ≤1µA (max.)
• CMOS power levels
• True TTL input and output compatibility
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
• High drive outputs (-15mA IOH, 48mA IOL)
• Meets or exceeds JEDEC standard 18 specifications
• Product available in Radiation Tolerant and Radiation
Enhanced versions
• Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
• Available in DIP, SOIC, QSOP, CERPACK and LCC
packages
DESCRIPTION:
The IDT54/74FCT161T/163T, IDT54/74FCT161AT/ 163AT
and IDT54/74FCT161CT/163CT are high-speed synchro-
nous modulo-16 binary counters built using an advanced dual
metal CMOS technology. They are synchronously preset-
table for application in programmable dividers and have two
types of count enable inputs plus a terminal count output for
versatility in forming synchronous multi-stage counters. The
IDT54/74FCT161T/AT/CT have asynchronous Master Reset
inputs that override all other inputs and force the outputs LOW.
The IDT54/74FCT163T/AT/CT have Synchronous Reset in-
puts that override counting and parallel loading and allow the
outputs to be simultaneously reset on the rising edge of the
clock.
FUNCTIONAL BLOCK DIAGRAMS
P0
PE
'161 _'163
CEP
CET
163
ONLY
P1
P2
P3
TC
CP
MR ('161)
SR ('163)
161
CP
ONLY
CP
D CP D
CD
QQ
Q0
Q0
DETAIL A
Q0
DETAIL
A
Q1
DETAIL
A
Q2
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1995 Integrated Device Technology, Inc.
6.7
DETAIL
A
Q3
2611 drw 01
OCTOBER 1994
DSC-4219/4
1