SN74LS73 Motorola, SN74LS73 Datasheet

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SN74LS73

Manufacturer Part Number
SN74LS73
Description
DUAL JK NEGATIVE EDGE-TRIGGERED FLIP-FLOP
Manufacturer
Motorola
Datasheet

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DUAL JK NEGATIVE
EDGE-TRIGGERED FLIP-FLOP
dual flip-flops are designed so that when the clock goes HIGH, the inputs are
enabled and data will be accepted. The logic level of the J and K inputs may
be allowed to change when the clock pulse is HIGH and the bistable will per-
form according to the truth table as long as minimum set-up times are ob-
served. Input data is transferred to the outputs on the negative-going edge of
the clock pulse.
H, h = HIGH Voltage Level
L, I = LOW Voltage Level
X = Don’t Care
l, h (q) = Lower case letters indicate the state of the referenced input (or output) one set-up time
l, h (q) =
13 (8)
3 (10)
Reset (Clear)
Toggle
Load “0” (Reset)
Load “1” (Set)
Hold
The SN54LS / 74LS73A offers individual J, K, clear, and clock inputs. These
Q
K
OPERATING MODE
OPERATING MODE
prior to the HIGH to LOW clock transition.
LOGIC DIAGRAM (Each Flip-Flop)
MODE SELECT — TRUTH TABLE
C D
H
H
H
H
L
INPUTS
CLOCK (CP)
X
J
h
h
l
l
1 (15)
FAST AND LS TTL DATA
K
X
h
h
l
l
5-68
Q
H
L
q
L
q
OUTPUTS
Q
12 (9)
CLEAR
2 (6)
J
14 (7)
Q
H
H
q
L
q
14
1
3
EDGE-TRIGGERED FLIP-FLOP
14
14
SN54/74LS73A
14
ORDERING INFORMATION
J
CP
K
LOW POWER SCHOTTKY
1
1
SN54LSXXJ
SN74LSXXN
SN74LSXXD
DUAL JK NEGATIVE
C D
2
1
LOGIC SYMBOL
Q
Q
V CC = PIN 4
GND = PIN 11
12
13
10
Ceramic
Plastic
SOIC
5
7
CASE 751A-02
CASE 632-08
CASE 646-06
CERAMIC
N SUFFIX
D SUFFIX
J SUFFIX
PLASTIC
J
CP
K
SOIC
C D
6
Q
Q
9
8

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SN74LS73 Summary of contents

Page 1

DUAL JK NEGATIVE EDGE-TRIGGERED FLIP-FLOP The SN54LS / 74LS73A offers individual J, K, clear, and clock inputs. These dual flip-flops are designed so that when the clock goes HIGH, the inputs are enabled and data will be accepted. The logic ...

Page 2

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 Symbol Parameter Parameter V IH Input ...

Page 3

SN54/74LS73A AC WAVEFORMS h( s(L) t W( MAX t PHL Q 1 PLH 1 *The shaded areas indicate when the input is permitted to ...

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