SN74LS290N ON Semiconductor, SN74LS290N Datasheet

no-image

SN74LS290N

Manufacturer Part Number
SN74LS290N
Description
DECADE COUNTER 4-BIT BINARY COUNTER
Manufacturer
ON Semiconductor
Datasheet
DECADE COUNTER;
4-BIT BINARY COUNTER
counters partitioned into two sections. Each counter has a divide-by-two sec-
tion and either a divide-by-five (LS290) or divide-by-eight (LS293) section
which are triggered by a HIGH-to-LOW transition on the clock inputs. Each
section can be used separately or tied together (Q to CP)to form BCD,
Bi-quinary, or Modulo-16 counters. Both of the counters have a 2-input gated
Master Reset (Clear), and the LS290 also has a 2-input gated Master Set
(Preset 9).
The SN54 / 74LS290 and SN54 / 74LS293 are high-speed 4-bit ripple type
Corner Power Pin Versions of the LS90 and LS93
Low Power Consumption . . . Typically 45 mW
High Count Rates . . . Typically 42 MHz
Choice of Counting Modes . . . BCD, Bi-Quinary, Binary
Input Clamp Diodes Limit High Speed Termination Effects
V CC
V CC
MS
NC
14
14
1
1
MR
NC
MR
NC
13
13
2
2
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 A 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.
c) The Q 0 Outputs are guaranteed to drive the full fan-out plus the CP 1 Input of the device.
MS
MR
NC
PIN NAMES
CP 0
CP1
CP1
MR1, MR2
MS1, MS2
Q0
Q1, Q2, Q3
MR
12
CONNECTION DIAGRAM DIP (TOP VIEW)
12
3
3
LS290
LS293
CP 1
CP 1
Q 2
11
Q 2
11
4
4
CP 0
CP 0
Q 1
10
Q 1
10
5
5
Clock (Active LOW going edge) Input to 2 Section.
Clock (Active LOW going edge) Input to 5 Section (LS290).
Clock (Active LOW going edge) Input to 8 Section (LS293).
Master Reset (Clear) Inputs
Master Set (Preset-9, LS290) Inputs
Output from 2 Section (Notes b & c)
Outputs from 5 & 8 Sections (Note b)
Q 0
NC
Q 0
NC
9
6
9
6
GND
GND
Q 3
Q 3
8
7
8
7
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
FAST AND LS TTL DATA
5-1
14
14
SN54/74LS290
SN54/74LS293
4-BIT BINARY COUNTER
0.05 U.L.
0.05 U.L.
0.05 U.L.
ORDERING INFORMATION
14
LOW POWER SCHOTTKY
1
0.5 U.L.
0.5 U.L.
1
HIGH
10 U.L.
10 U.L.
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
LOADING (Note a)
DECADE COUNTER;
1
5 (2.5) U.L.
5 (2.5) U.L.
LOW
0.25 U.L.
0.25 U.L.
1.5 U.L.
2.0 U.L.
1.0 U.L.
Ceramic
Plastic
SOIC
CASE 751A-02
CASE 632-08
CASE 646-06
CERAMIC
N SUFFIX
D SUFFIX
J SUFFIX
PLASTIC
SOIC

Related parts for SN74LS290N

SN74LS290N Summary of contents

Page 1

DECADE COUNTER; 4-BIT BINARY COUNTER The SN54 / 74LS290 and SN54 / 74LS293 are high-speed 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two sec- tion and either a divide-by-five (LS290) or divide-by-eight (LS293) section which ...

Page 2

SN54/74LS290 LOGIC SYMBOL LS290 PIN 14 GND = PIN ...

Page 3

SN54/74LS290 FUNCTIONAL DESCRIPTION The LS290 and LS293 are 4-bit ripple type Decade, and 4-Bit Binary counters respectively. Each device consists of four master / slave flip-flops which are internally connected to provide a divide-by-two section and a divide-by-five (LS290) or ...

Page 4

SN54/74LS290 SN54/74LS293 GUARANTEED OPERATING RANGES Symbol Parameter V CC Supply Voltage T A Operating Ambient Temperature Range I OH Output Current — High I OL Output Current — Low DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE Symbol Parameter ...

Page 5

SN54/74LS290 AC CHARACTERISTICS ( 5 pF) S Symbol Parameter f MAX CP 0 Input Clock Frequency f MAX CP 1 Input ...

Related keywords