Philips N74F74N, N74F74D Datasheet

INTEGRATED CIRCUITS

74F74

Dual D-type flip-flop

Product specification

1996 Mar 12

Supercedes data of 1990 Oct 23

IC15 Data Handbook

m n r

Philips Semiconductors	Product specification
Dual D-type flip-flop	74F74

FEATURE

•Industrial temperature range available (±40°C to +85°C)

DESCRIPTION

The 74F74 is a dual positive edge-triggered D-type flip-flop featuring individual data, clock, set, and reset inputs; also true and complementary outputs. Set (SD) and reset (RD) are asynchronous active low inputs and operate independently of the clock input. When set and reset are inactive (high), data at the D input is transferred to the Q and Q outputs on the low-to-high transition of the clock. Data must be stable just one setup time prior to the low-to-high transition of the clock for predictable operation. Clock triggering occurs at a voltage level and is not directly related to the transition time of the positive-going pulse. Following the hold time interval, data at the D input may be changed without affecting the levels of the output.

PIN CONFIGURATION

	RD0				1		14		VCC
		D0
					2		13		RD1
	CP0								D1
					3		12
									CP1
	SD0				4		11
		Q0
					5		10		SD1
									Q1
		Q0			6		9
GND
					7		8		Q1
						SF00045

TYPE	TYPICAL fmax	TYPICAL SUPPLY CURRENT (TOTAL)
74F74	125MHz	11.5mA

ORDERING INFORMATION

	ORDER CODE
DESCRIPTION	COMMERCIAL RANGE		INDUSTRIAL RANGE	PKG. DWG. #
	VCC = 5V ±10%,		VCC = 5V ±10%,
	Tamb = 0°C to +70°C		Tamb = ±40°C to +85°C
14-pin plastic DIP	N74F74N		I74F74N	SOT27-1
14-pin plastic SO	N74F74D		I74F74D	SOT108-1

INPUT AND OUTPUT LOADING AND FAN OUT TABLE

PINS

DESCRIPTION

74F (U.L.) HIGH/LOW

LOAD VALUE HIGH/LOW

D0, D1

Data inputs

1.0/1.0

20μA/0.6mA

CP0, CP1

Clock inputs (active rising edge)

1.0/1.0

20μA/0.6mA

Set inputs (active low)

1.0/3.0

20μA/1.8mA

SD0, SD1

Reset inputs (active low)

1.0/3.0

20μA/1.8mA

RD0, RD1

Q0, Q1,

Data outputs

50/33

1.0mA/20mA

Q0, Q1

NOTE: One (1.0) FAST unit load is defined as: 20μA in the high state and 0.6mA in the low state.

LOGIC SYMBOL

IEC/IEEE SYMBOL

2

12

4

S

&

5

3

CP0

D0

D1

3

C1

2

1D

6

4

SD0

1

R

1

RD0

11

CP1

10

S

10

SD1

9

11

13

RD1

C2

12

Q0

Q0

Q1 Q1

2D

8

13

R

VCC = Pin 14

5

6

9 8

GND = Pin 7

SF00046

SF00047

1996 Mar 12

2

853 0335 16554

Philips Semiconductors	Product specification
Dual D-type flip-flop	74F74

LOGIC DIAGRAM

SD	4, 10
RD	1, 13	5, 9
		Q
	3, 11	6, 8
CP		Q
D	2, 12
VCC = Pin 14
GND = Pin 7
		SF00048

FUNCTION TABLE

INPUTS

OUTPUTS

OPERATING

SD

RD

CP

D

Q

Q

MODE

L

H

X

X

H

L

Asynchronous set

H

L

X

X

L

H

Asynchronous reset

L

L

X

X

H

H

Undetermined*

H

H

↑

h

H

L

Load º1º

H

H

↑

l

L

H

Load º0º

H

H

↑

X

NC

NC

Hold

NOTES:

H

=

High voltage level

h

=

High voltage level one setup time prior to low-to-high clock

transition

L

=

Low voltage level

l

=

Low voltage level one setup time prior to low-to-high clock

transition

NC=

No change from the previous setup

X

=

Don't care

↑= Low-to-high clock transition

↑= Not low-to-high clock transition

*= This setup is unstable and will change when either set or reset return to the high level.

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.)

	SYMBOL	PARAMETER		RATING	UNIT
	VCC	Supply voltage		±0.5 to +7.0	V
	VIN	Input voltage		±0.5 to +7.0	V
	IIN	Input current		±30 to +5	mA
	VOUT	Voltage applied to output in high output state		±0.5 to VCC	V
	IOUT	Current applied to output in low output state		40	mA
	Tamb	Operating free air temperature range	Commercial range	0 to +70	°C
			Industrial range	±40 to +85	°C
	Tstg	Storage temperature range		±65 to +150	°C

RECOMMENDED OPERATING CONDITIONS

	SYMBOL	PARAMETER			LIMITS		UNIT
				MIN	NOM	MAX
	VCC	Supply voltage		4.5	5.0	5.5	V
	VIH	High-level input voltage		2.0			V
	VIL	Low-level input voltage				0.8	V
	IIk	Input clamp current				±18	mA
	IOH	High-level output current				±1	mA
	IOL	Low-level output current				20	mA
	Tamb	Operating free air temperature range	Commercial range	0		+70	°C
			Industrial range	±40		+85	°C

1996 Mar 12

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