Datasheet 74HCT73DB, 74HCT73D, 74HCT73U, 74HCT73N, 74HC73U Datasheet (Philips)

DATA SH EET

Product specification
File under Integrated Circuits, IC06

December 1990

INTEGRATED CIRCUITS

74HC/HCT73

Dual JK flip-flop with reset;
negative-edge trigger

For a complete data sheet, please also download:

•The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications

•The IC06 74HC/HCT/HCU/HCMOS Logic Package Information

•The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines

December 1990 2

Philips Semiconductors Product specification

Dual JK flip-flop with reset; negative-edge trigger 74HC/HCT73

FEATURES

• Output capability: standard

• ICC category: flip-flops

GENERAL DESCRIPTION

The 74HC/HCT73 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.

The 74HC/HCT73 are dual negative-edge triggered
JK-type flip-flops featuring individual J, K, clock (n

CP) and

reset (nR) inputs; also complementary Q and Q outputs.
The J and K inputs must be stable one set-up time prior to

the HIGH-to-LOW clock transition for predictable
operation.

The reset (nR) is an asynchronous active LOW input.
When LOW, it overrides the clock and data inputs, forcing
the Q output LOW and the Q output HIGH.

Schmitt-trigger action in the clock input makes the circuit
highly tolerant to slower clock rise and fall times.

QUICK REFERENCE DATA

GND = 0 V; T

amb

=25°C; tr=tf= 6 ns

Notes

1. C

PD

is used to determine the dynamic power dissipation (PD in µW):

PD=CPD× V

CC

2

× fi+∑(CL× V

CC

2

× fo) where:
fi= input frequency in MHz
fo= output frequency in MHz
∑ (CL× V

CC

2

× fo) = sum of outputs
CL= output load capacitance in pF
VCC= supply voltage in V

2. For HC the condition is VI= GND to V

CC

For HCT the condition is VI= GND to VCC− 1.5 V

ORDERING INFORMATION

See

“74HC/HCT/HCU/HCMOS Logic Package Information”

.

SYMBOL PARAMETER CONDITIONS

TYPICAL

UNIT

HC HCT

t

PHL

/ t

PLH

propagation delay CL= 15 pF; VCC=5 V

n

CP to nQ 16 15 ns

n

CP to nQ 1618ns

n

R to nQ, nQ 1515ns

f

max

maximum clock frequency 77 79 MHz

C

I

input capacitance 3.5 3.5 pF

C

PD

power dissipation capacitance per flip-flop notes 1 and 2 30 30 pF

December 1990 3

Philips Semiconductors Product specification

Dual JK flip-flop with reset; negative-edge trigger 74HC/HCT73

PIN DESCRIPTION

PIN NO. SYMBOL NAME AND FUNCTION

1, 5 1

CP, 2CP clock input (HIGH-to-LOW, edge-triggered)

2, 6 1

R, 2R asynchronous reset inputs (active LOW)

4V

CC

positive supply voltage
11 GND ground (0 V)
12, 9 1Q, 2Q true flip-flop outputs
13, 8 1

Q, 2Q complement flip-flop outputs

14, 7, 3, 10 1J, 2J, 1K, 2K synchronous inputs; flip-flops 1 and 2

Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.

December 1990 4

Philips Semiconductors Product specification

Dual JK flip-flop with reset; negative-edge trigger 74HC/HCT73

Fig.4 Functional diagram.

FUNCTION TABLE

Notes

1. H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the HIGH-to-LOW CP

transition
L = LOW voltage level
I = LOW voltage level one set-up time prior to the HIGH-to-LOW CP

transition

q = lower case letters indicate the state of the referenced output one

set-up time prior to the HIGH-to-LOW CP transition
X = don’t care
↓ = HIGH-to-LOW CP transition

OPERATING

MODE

INPUTS OUTPUTS

nRnCP J K Q Q

asynchronous reset L X X X L H

toggle
load “0” (reset)
load “1” (set)
hold “no change”

H
H
H
H

↓
↓
↓
↓

h

l

h

l

h
h

l
l

q
L

H

q

q

H

L
q

Fig.5 Logic diagram (one flip-flop).

December 1990 5

Philips Semiconductors Product specification

Dual JK flip-flop with reset; negative-edge trigger 74HC/HCT73

DC CHARACTERISTICS FOR 74HC

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”

.

Output capability: standard
ICC category: flip-flops

AC CHARACTERISTICS FOR 74HC

GND = 0 V; t

r=tf

= 6 ns; CL= 50 pF

SYMBOL PARAMETER

T

amb

(°C) TEST CONDITIONS

74HC

UNIT

V

CC

(V)

WAVEFORMS+25 −40 to +85 −40 to +125

min. typ. max. min. max. min. max.

t

PHL

/ t

PLH

propagation delay

nCP to nQ

52
19
15

160
32
27

200
40
34

240
48
41

ns 2.0

4.5

6.0

Fig.6

t

PHL

/ t

PLH

propagation delay

nCP to nQ

52
19
15

160
32
27

200
40
34

240
48
41

ns 2.0

4.5

6.0

Fig.6

t

PHL

/ t

PLH

propagation delay

nR to nQ, nQ

50
18
14

145
29
25

180
36
31

220
44
38

ns 2.0

4.5

6.0

Fig.7

t

THL

/ t

TLH

output transition time 19

7
6

75
15
13

95
19
16

110
22
19

ns 2.0

4.5

6.0

Fig.6

t

W

clock pulse width

HIGH or LOW

80
16
14

22
8
6

100
20
17

120
24
20

ns 2.0

4.5

6.0

Fig.6

t

W

reset pulse width

HIGH or LOW

80
16
14

22
8
6

100
20
17

120
24
20

ns 2.0

4.5

6.0

Fig.7

t

rem

removal time

nR to nCP

80
16
14

22
8
6

100
20
17

120
24
20

ns 2.0

4.5

6.0

Fig.7

t

su

set-up time

nJ, nK to nCP

80
16
14

22
8
6

100
20
17

120
24
20

ns 2.0

4.5

6.0

Fig.6

t

h

hold time

nJ, nK to nCP

3
3
3

−8

−3

−2

3
3
3

3
3
3

ns 2.0

4.5

6.0

Fig.6

f

max

maximum clock pulse

frequency

6.0
30
35

23
70
83

4.8
24
28

4.0
20
24

MHz 2.0

4.5

6.0

Fig.6

December 1990 6

Philips Semiconductors Product specification

Dual JK flip-flop with reset; negative-edge trigger 74HC/HCT73

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”

.

Output capability: standard
ICC category: flip-flops

Note to HCT types

The value of additional quiescent supply current (∆I

CC

) for a unit load of 1 is given in the family specifications.

To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.

AC CHARACTERISTICS FOR 74HCT

GND = 0 V; t

r=tf

= 6 ns; CL= 50 pF

INPUT UNIT LOAD COEFFICIENT

nK
nR
nCP, nJ

0.60

0.65

1.00

SYMBOL PARAMETER

T

amb

(°C) TEST CONDITIONS

74 HCT

UNIT

V

CC

(V)

WAVEFORMS

+25 −40 to +85 −40 to +125

min. typ. max. min. max. min. max.

t

PHL

/ t

PLH

propagation delay

nCP to nQ

18 38 48 57 ns 4.5 Fig.6

t

PHL

/ t

PLH

propagation delay

nCP to nQ

21 36 45 54 ns 4.5 Fig.6

t

PHL

/ t

PLH

propagation delay

nR to nQ, nQ

20 34 43 51 ns 4.5 Fig.7

t

THL

/ t

TLH

output transition time 7 15 19 22 ns 4.5 Fig.6

t

W

clock pulse width

HIGH or LOW

16 8 20 24 ns 4.5 Fig.6

t

W

reset pulse width

HIGH or LOW

18 9 23 27 ns 4.5 Fig.7

t

rem

removal time

nR to nCP

14 8 18 21 ns 4.5 Fig.7

t

su

set-up time

nJ, nK to nCP

12 6 15 18 ns 4.5 Fig.6

t

h

hold time

nJ, nK to nCP

3 −2 3 3 ns 4.5 Fig.6

f

max

maximum clock pulse

frequency

30 72 24 20 MHz 4.5 Fig.6

December 1990 7

Philips Semiconductors Product specification

Dual JK flip-flop with reset; negative-edge trigger 74HC/HCT73

AC WAVEFORMS

PACKAGE OUTLINES

See

“74HC/HCT/HCU/HCMOS Logic Package Outlines”

.

Fig.6 Waveforms showing the clock (nCP) to output (nQ, nQ) propagation delays, the clock pulse width, the J

and K to nCP set-up and hold times, the output transition times and the maximum clock pulse frequency.

The shaded areas indicate when the input is
permitted to change for predictable output
performance.

(1) HC : V

M

= 50%; VI= GND to VCC.

HCT: VM= 1.3 V; VI= GND to 3 V.

Fig.7 Waveforms showing the reset (nR) input to output (nQ, nQ) propagation delays and the reset pulse width

and the nR to nCP removal time.

(1) HC : VM= 50%; VI= GND to VCC.

HCT: VM= 1.3 V; VI= GND to 3 V.