NSC JM38510-01701BF, JM38510-01701BE Datasheet

TL/F/6557

54174/DM54174/DM74174, 54175/DM54175/DM74175 Hex/Quad D Flip-Flops with Clear

June 1989

54174/DM54174/DM74174, 54175/DM54175/DM74175
Hex/Quad D Flip-Flops with Clear

General Description

These positive-edge triggered flip-flops utilize TTL circuitry
to implement D-type flip-flop logic. All have a direct clear
input, and the quad (175) version features complementary
outputs from each flip-flop.

Information at the D inputs meeting the setup and hold time
requirements is transferred to the Q outputs on the positive­going edge of the clock pulse. Clock triggering occurs at a
particular voltage level and is not directly related to the tran­sition time of the positive-going pulse. When the clock input
is at either the high or low level, the D input signal has no
effect at the output.

Features

Y

174 contains six flip-flops with single-rail outputs

Y

175 contains four flip-flops with double-rail outputs

Y

Buffered clock and direct clear inputs

Y

Individual data input to each flip-flop

Y

Applications include:

Buffer/storage registers
Shift registers
Pattern generators

Y

Typical clock frequency 40 MHz

Y

Typical power dissipation per flip-flop 38 mW

Y

Alternate Military/Aerospace device (54174, 54175) is
available. Contact a National Semiconductor Sales Of­fice/Distributor for specifications.

Connection Diagrams

Dual-In-Line Package

TL/F/6557– 1

Order Number 54174DMQB, 54174FMQB, DM54174J,

DM54174W or DM74174N

See NS Package Number J16A, N16E or W16A

Dual-In-Line Package

TL/F/6557– 2

Order Number 54175DMQB, 54175FMQB, DM54175J,

DM54175W or DM74175N

See NS Package Number J16A, N16E or W16A

Function Table (Each Flip-Flop)

Inputs Outputs

Clear Clock D Q Q

²

LXXLH
H

u

HH L

H

u

LL H

HLXQ

0

Q

0

H

e

High Level (steady state)

L

e

Low Level (steady state)

X

e

Don’t Care

u

e

Transition from low to high level

Q

0

e

The level of Q before the indicated steady-state input conditions were established.

²

e

175 only

C

1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.

Absolute Maximum Ratings (Note)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Supply Voltage 7V

Input Voltage 5.5V

Operating Free Air Temperature Range

DM54 and 54

b

55§Ctoa125§C

DM74 0

§

Ctoa70§C

Storage Temperature Range

b

65§Ctoa150§C

Note:

The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran­teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.

Recommended Operating Conditions

Symbol Parameter

DM54174 DM74174

Units

Min Nom Max Min Nom Max

V

CC

Supply Voltage 4.5 5 5.5 4.75 5 5.25 V

V

IH

High Level Input Voltage 2 2 V

V

IL

Low Level Input Voltage 0.8 0.8 V

I

OH

High Level Output Current

b

0.8

b

0.8 mA

I

OL

Low Level Output Current 16 16 mA

f

CLK

Clock Frequency (Note 4) 0 30 0 30 MHz

t

W

Pulse Width Clock Low 25 25
(Note 4)

Clock High 10 10 ns

Clear 20 20

t

SU

Data Setup Time (Note 4) 20 20 ns

t

H

Data Hold Time (Note 4) 0 0 ns

t

REL

Clear Release Time (Note 4) 30 30 ns

T

A

Free Air Operating Temperature

b

55 125 0 70

§

C

’174 Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Symbol Parameter Conditions Min

Typ

Max Units

(Note 1)

V

I

Input Clamp Voltage V

CC

e

Min, I

I

eb

12 mA

b

1.5 V

V

OH

High Level Output V

CC

e

Min, I

OH

e

Max

2.4 V

Voltage V

IL

e

Max, V

IH

e

Min

V

OL

Low Level Output V

CC

e

Min, I

OL

e

Max

0.4 V

Voltage V

IH

e

Min, V

IL

e

Max

I

I

Input Current@Max V

CC

e

Max, V

I

e

5.5V
1mA

Input Voltage

I

IH

High Level Input Current V

CC

e

Max, V

I

e

2.4V 40 mA

I

IL

Low Level Input Current V

CC

e

Max, V

I

e

0.4V

b

1.6 mA

I

OS

Short Circuit V

CC

e

Max DM54

b

20

b

57

mA

Output Current (Note 2)

DM74

b

18

b

57

I

CC

Supply Current V

CC

e

Max (Note 3) 45 65 mA

Note 1: All typicals are at V

CC

e

5V, T

A

e

25§C.

Note 2: Not more than one output should be shorted at a time.

Note 3: With all outputs open and all DATA and CLEAR inputs at 4.5V, I

CC

is measured after a momentary ground, then 4.5V applied to the CLOCK input.

Note 4: T

A

e

25§C and V

CC

e

5V.

2

’174 Switching Characteristics

at V

CC

e

5V and T

A

e

25§C (See Section 1 for Test Waveforms and Output Load)

Symbol Parameter

From (Input)

R

L

e

400X,C

L

e

15 pF

Units

To (Output)

Min Max

f

MAX

Maximum Clock

30 MHz

Frequency

t

PLH

Propagation Delay Time Clock to

25 ns

Low to High Level Output Any Q

t

PHL

Propagation Delay Time Clock to

25 ns

High to Low Level Output Any Q

t

PHL

Propagation Delay Time Clear to

40 ns

High to Low Level Output Any Q

Recommended Operating Conditions

Symbol Parameter

DM54175 DM74175

Units

Min Nom Max Min Nom Max

V

CC

Supply Voltage 4.5 5 5.5 4.75 5 5.25 V

V

IH

High Level Input Voltage 2 2 V

V

IL

Low Level Input Voltage 0.8 0.8 V

I

OH

High Level Output Current

b

0.8

b

0.8 mA

I

OL

Low Level Output Current 16 16 mA

f

CLK

Clock Frequency (Note 1) 0 30 0 30 MHz

t

W

Pulse Width Clock Low 25 25
(Note 1)

Clock High 10 10 ns

Clear 20 20

t

SU

Data Setup Time (Note 1) 20 20 ns

t

H

Data Hold Time (Note 1) 0 0 ns

t

REL

Clear Release Time (Note 1) 30 30 ns

T

A

Free Air Operating Temperature

b

55 125 0 70

§

C

Note 1: T

A

e

25§C and V

CC

e

5V.

3