HD74LS221P Renesas Electronics Corporation., HD74LS221P Datasheet

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HD74LS221P

Manufacturer Part Number
HD74LS221P
Description
Manufacturer
Renesas Electronics Corporation.
Datasheet

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HD74LS293
4-bit Binary Counter
This counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and divide-
by-eight counter. This counter has a gated zero reset. To use the maximum count length of this counter, the B input is
connected to the Q
appropriate function table.
Features
Pin Arrangement
Function Table
Reset / Count
Rev.3.00, Jul.15.2005, page 1 of 7
Part Name
HD74LS293P
Ordering Information
R
0 (1)
H
X
L
Reset Input
A
output. The input count pulses are applied to input A and the outputs are as described in the
Package Type
DILP-14 pin
Outputs
R
H
0 (2)
X
L
GND
NC
NC
NC
NC
Q
Q
C
B
1
2
3
4
5
6
7
Package Code
(Previous Code)
PRDP0014AB-B
(DP-14AV)
Q
L
D
Q
Q
(Top view)
C
B
Q
D
R
R
0(2)
0(1)
Q
B
A
A
Q
L
C
Package
Abbreviation
P
14
13
12
11
10
Outputs
9
8
Count
Count
V
R
R
B
A
Q
Q
CC
0(2)
0(1)
A
D
Outputs
Inputs
Q
L
B
Taping Abbreviation
(Quantity)
REJ03D0477–0300
Jul.15.2005
Q
Rev.3.00
L
A

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HD74LS221P Summary of contents

Page 1

HD74LS293 4-bit Binary Counter This counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and divide- by-eight counter. This counter has a gated zero reset. To use the maximum count length of this counter, the B ...

Page 2

HD74LS293 BCD Count Sequence Count Notes: 1. ...

Page 3

HD74LS293 Absolute Maximum Ratings Item Supply voltage R Inputs O Input voltage A, B Inputs Power dissipation Operating temperature Storage temperature Note: Voltage value, unless otherwise noted, are with respect to network ground terminal. Recommended Operating Conditions Item Supply voltage ...

Page 4

HD74LS293 Switching Characteristics Item Symbol Inputs Maximum count max frequency t PLH t PHL t PLH t PHL t PLH Propagation delay t PHL time t PLH t PHL t PLH t PHL t Set-to-0 PHL Timing Method R 0 ...

Page 5

HD74LS293 Testing Method Test Circuit 4.5V P. 50Ω out Notes includes probe and jig capacitance All diodes are 1S2074(H). Testing Table Item From input to output A Q max ...

Page 6

HD74LS293 Waveforms (Clock Q) max PLH PHL t TLH 90% Clock 10 Notes: 1. Clock input pulse; t and : for , t max TLH 2. ...

Page 7

HD74LS293 Package Dimensions JEITA Package Code RENESAS Code P-DIP14-6.3x19.2-2.54 PRDP0014AB Rev.3.00, Jul.15.2005, page Previous Code MASS[Typ.] DP-14AV 0.97g Dimension in Millimeters Reference Symbol Min Nom e ...

Page 8

Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead ...

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