SN74LS160A Datasheet, PDF (1/7 Pages) Motorola, Inc – BCD DECADE COUNTERS/ 4-BIT BINARY COUNTERS

SN74LS160A
BCD DECADE COUNTERS/
4-BIT BINARY COUNTERS
The LS160A/161A /162A /163A are high-speed 4-bit synchronous
counters. They are edge-triggered, synchronously presettable, and
cascadable MSI building blocks for counting, memory addressing,
frequency division and other applications. The LS160A and LS162A
count modulo 10 (BCD). The LS161A and LS163A count modulo 16
(binary).
The LS160A and LS161A have an asynchronous Master Reset
(Clear) input that overrides, and is independent of, the clock and all
other control inputs. The LS162A and LS163A have a Synchronous
Reset (Clear) input that overrides all other control inputs, but is active
only during the rising clock edge.
Asynchronous Reset
Synchronous Reset
BCD (Modulo 10)
LS160A
LS162A
Binary (Modulo 16)
LS161A
LS163A
• Synchronous Counting and Loading
• Two Count Enable Inputs for High Speed Synchronous Expansion
• Terminal Count Fully Decoded
• Edge-Triggered Operation
• Typical Count Rate of 35 MHz
• ESD > 3500 Volts
CONNECTION DIAGRAM DIP (TOP VIEW)
V_CC TC Q₀ Q₁ Q₂ Q₃ CET PE
16 15 14 13 12 11 10 9
NOTE:
The Flatpak version
has the same pinouts (Connection
Diagram) as the Dual In-Line Pack-
age.
1234
*R CP P₀ P₁
56 78
P₂ P₃ CEP GND
*MR for LS160A and LS161A
*SR for LS162A and LS163A
PIN NAMES
LOADING (Note a)
HIGH
LOW
PE
P₀ −P₃
CEP
CET
CP
MR
SR
Q₀ −Q₃
TC
Parallel Enable (Active LOW) Input
Parallel Inputs
Count Enable Parallel Input
Count Enable Trickle Input
Clock (Active HIGH Going Edge) Input
Master Reset (Active LOW) Input
Synchronous Reset (Active LOW) Input
Parallel Outputs (Note b)
Terminal Count Output (Note b)
1.0 U.L.
0.5 U.L.
0.5 U.L.
1.0 U.L.
0.5 U.L.
0.5 U.L.
1.0 U.L.
10 U.L.
10 U.L.
0.5 U.L.
0.25 U.L.
0.25 U.L.
0.5 U.L.
0.25 U.L.
0.25 U.L.
0.5 U.L.
5 (2.5) U.L.
5 (2.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 μA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges.
© Semiconductor Components Industries, LLC, 2006
1
June, 2006 − Rev. 7
http://onsemi.com
BCD DECADE COUNTERS/
4-BIT BINARY COUNTERS
LOW POWER SCHOTTKY
16
1
J SUFFIX
CERAMIC
CASE 620-09
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
LOGIC SYMBOL
934 56
PE P₀ P₁ P₂ P₃
7
CEP
10
CET
TC
15
2
CP
*R Q₀ Q₁ Q₂ Q₃
1 14 13 12 11
V_CC = PIN 16
GND = PIN 8
*MR for LS160A and LS161A
*SR for LS162A and LS163A
Publication Order Number:
MC74HC14A/D