CY54FCT163T, CY74FCT163T
4-BIT BINARY COUNTERS
SCCS015A – MAY 1994 – REVISED OCTOBER 2001
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Function, Pinout, and Drive Compatible
With FCT and F Logic
D Reduced VOH (Typically = 3.3 V) Versions of
Equivalent FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D Ioff Supports Partial-Power-Down Mode
Operation
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
D Matched Rise and Fall Times
D Fully Compatible With TTL Input and
Output Logic Levels
D CY54FCT163T
– 32-mA Output Sink Current
– 12-mA Output Source Current
D CY74FCT163T
– 64-mA Output Sink Current
– 32-mA Output Source Current
description
The
’FCT163T
devices
are
high-speed
synchronous modulo-16 binary counters. They
are synchronously presettable for application in
programmable dividers. These devices have two
types of count-enable (CEP and CET) inputs, plus a terminal-count (TC) output for versatility in forming
synchronous multistaged counters. The ’FCT163T devices have a synchronous-reset (SR) input that overrides
counting and parallel loading, and allows the outputs to be reset simultaneously on the rising edge of the clock.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the
outputs, preventing damaging current backflow through the device when it is powered down.
PIN DESCRIPTION
NAME
DESCRIPTION
CEP
Count-enable parallel input
CET
Count-enable trickle input
CP
Clock pulse input (active rising edge)
SR
Synchronous-reset input (active low)
P
Parallel data inputs
PE
Parallel-enable input (active low)
Q
Flip-flop outputs
TC
Terminal-count output
Copyright
2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SR
CP
P0
P1
P2
P3
CEP
GND
VCC
TC
Q0
Q1
Q2
Q3
CET
PE
CY74FCT163CT ...Q OR SO PACKAGE
(TOP VIEW)
32 1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
Q0
Q1
NC
Q2
Q3
P0
P1
NC
P2
P3
CP
SR
NC
PE
CET
V
TC
GND
NC
NC – No internal connection
CC
CEP
CY54FCT163T ...L PACKAGE
(TOP VIEW)
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.