Datasheet 74f756, 74f757, 74f 760 DATASHEETS (Philips)

INTEGRATED CIRCUITS

74F756

Octal inverter buffer (open-collector)

74F757

Octal buffer (open-collector)

74F760

Octal buffer (open-collector)

Product specification IC15 Data Handbook

1989 Nov 27

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Philips Semiconductors Product specification

Buffers

74F756/74F757/74F760

74F756 Octal Inverter Buffer (Open Collector) 74F757 Octal Buffer (Open Collector) 74F760 Octal Buffer (Open Collector)

FEA TURES

•Octal bus interface

•Open collector versions of 74F240, 74F241 and 74F244

DESCRIPTION

The 74F756, 74F757 and 74F760 are octal buffers that are ideal for driving bus lines of buffer memory address registers. The 74F756 is the open collector version of 74F240, 74F757 is the open collector version of 74F241 and 74760 is the open collector version of 74F244. These devices feature two Output Enables. OE (or OEb for the 74F757), each controlling four of the outputs.

a and OEb

TYPE

74F756 9.0ns 40mA 74F757 9.0ns 45mA 74F760 9.0ns 45mA

ORDERING INFORMATION

ORDER CODE

DESCRIPTION COMMERCIAL RANGE

20–pin plastic DIP N74F756N, N74F757AN, N74F760N SOT146-1

20–pin plastic SOL N74F756D, N74F757AD, N74F760D SOT163-1

VCC = 5V ±10%, T

= 0°C to +70°C

amb

TYPICAL

PROPAGATION DELAY

TYPICAL SUPPL Y

CURRENT (TOTAL)

PKG DWG #

INPUT AND OUTPUT LOADING AND FAN OUT TABLE

PINS DESCRIPTION

Ian, Ibn Data inputs 1.0/1.67 20µA/1.0mA

OEa, OEb Output enable input (active Low) 1.0/1.67 20µA/0.2mA

OEb Output enable input (active High 74F757) 1.0/1.67 20µA/1.0mA Yan, Ybn Data outputs (74F757, 74F760) OC/106.7 OC/64mA Yan, Ybn Data outputs (74F756) OC/106.7 OC/64mA

Notes:

One (1.0) FAST unit load is defined as: 20µA in the high state and 0.6mA in the Low state. OC=Open Collector

74F (U.L.)

HIGH/LOW

LOAD VALUE

HIGH/LOW

1989 Nov 27 853–0270 98220

2

Philips Semiconductors Product specification

74F756/74F757/74F760Buffers

PIN CONFIGURATION for 74F756

1

OEa

2

Ia0

3

Yb0

4

Ia1

5

Y

b1

6

Ia2

7

Y

b2

8

Ia3

9

Yb3

10 11

GND

20 19 18 17 16 15 14 13 12

SF00320

LOGIC SYMBOL for 74F756

2 4 6 8 17 15 13 11

Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3

119OEa

OEb

Ya0 Ya1 Ya2 Ya3 Yb0 Yb1 Yb2 Yb3

V OEb Y Ib0 Y Ib1 Y Ib2 Ya3 Ib3

IEC/IEEE SYMBOL for 74F756

CC

a0

a1

a2

1 19

2 4 6 8 17 15 13 11

EN1 EN2

1

2

18 16 14 12 3 5 7 9

SF01246

LOGIC DIAGRAM for 74F756

Ia0

Ia1

Ia2

Ia3

2

4

6

8

18

Y

a0

16

a1

Y

14

a2

Y

12

Y

a3

Ib0

Ib1

Ib2

Ib3

17

15

13

11

3

Y

b0

5

b1

Y

7

b2

Y

9

Y

b3

181614123579

VCC = Pin 20 GND = Pin 10

SF00321

FUNCTION TABLE for 74F756

INPUTS OUTPUTS

OEa Ia OEb Ib Ya Yb

L L L L H H L H L H L L

H X H X H (off) H (off)

H = High voltage level L = Low voltage level X = Don’t care

OEb

VCC = Pin 20 GND = Pin 10

1

OE

19

b

SF01247

1989 Nov 27

3

Philips Semiconductors Product specification

74F756/74F757/74F760Buffers

PIN CONFIGURATION for 74F757

OE

1

a

2

Ia0

3

Yb0

4

Ia1

5

Yb1

6

Ia2

7

Yb2

8

Ia3

9

Yb3

10 11

GND

20 V 19 18 17 16 15 14 13 12

SF01248

LOGIC SYMBOL for 74F757

2 4 6 8 17 15 13 11

Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3

1

OEa

19

OEb

Ya0 Ya1Ya2Ya3Yb0Yb1Yb2Yb3

18 16 14 12 3 5 7 9

CC

OEb Ya0 Ib0 Ya1 Ib1 Ya2 Ib2 Ya3 Ib3

LOGIC DIAGRAM for 74F757

Ia0

Ia1

Ia2

Ia3

OEa

V

= Pin 20

CC

GND = Pin 10

2

4

6

8

1

18

Ya0

16

Ya1

14

Ya2

12

Ya3

Ib0

Ib1

Ib2

Ib3

OEb

17

15

13

11

19

3

5

7

9

SF01251

FUNCTION TABLE for 74F757

INPUTS OUTPUTS

OEa Ia OEb Ib Ya Yb

L L H L L L L H H H H H H X L X H (off) H (off)

H = High voltage level L = Low voltage level X = Don’t care

Yb0

Yb1

Yb2

Yb3

V

= Pin 20

CC

GND = Pin 10

IEC/IEEE SYMBOL for 74F757

1

19

2 4 6 8 17 15 13 11

EN1 EN2

1

2

SF01250

18 16 14 12

3 5 7 9

SF01249

1989 Nov 27

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Philips Semiconductors Product specification

74F756/74F757/74F760Buffers

PIN CONFIGURATION for 74F760

1

OEa

2

Ia0

3

Yb0

4

Ia1

5

Yb1

6

Ia2

7

Yb2

8

Ia3

9

Yb3

10 11

GND

20 19 18 17 16 15 14 13 12

SF01252

LOGIC SYMBOL for 74F760

2 4 6 8 17 15 13 11

Ia0 Ia1 Ia2 Ia3 Ib0 Ib1 Ib2 Ib3

1

OEa

19

OEb

Ya0 Ya1Ya2Ya3Yb0Yb1Yb2Yb3

V OE Ya0 Ib0 Ya1 Ib1 Ya2 Ib2 Ya3 Ib3

CC

IEC/IEEE SYMBOL for 74F760

1

b

19

2 4 6 8 17 15 13 11

EN1 EN2

1

2

18 16 14 12 3 5 7 9

SF01253

LOGIC DIAGRAM for 74F760

Ia0

Ia1

Ia2

Ia3

2

4

6

8

18

Ya0

16

Ya1

14

Ya2

12

Ya3

Ib0

Ib1

Ib2

Ib3

17

15

13

11

3

Yb0

5

Yb1

7

Yb2

9

Yb3

18 16 14 12 3 5 7 9

= Pin 20

V

CC

GND = Pin 10

SF01254

FUNCTION TABLE for 74F760

INPUTS OUTPUTS

OEa Ia OEb Ib Ya Yb

L L L L L L L H L H H H

H X H X H (off) H (off)

H = High voltage level L = Low voltage level X = Don’t care

OEa

V

= Pin 20

CC

GND = Pin 10

1

OE

19

b

SF01255

1989 Nov 27

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Philips Semiconductors Product specification

V

MAX

74F756

ICCSupply current (total)

74F757

V

MAX

74F760

74F756/74F757/74F760Buffers

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

V V I

IN

V I

OUT

T T

CC IN

OUT

amb stg

Supply voltage –0.5 to +7.0 V Input voltage –0.5 to +7.0 V Input current –30 to +5 mA

Voltage applied to output in High output state –0.5 to V Current applied to output in Low output state

Operating free-air temperature range 0 to +70 °C Storage temperature range –65 to +150 °C

RECOMMENDED OPERATING CONDITIONS

SYMBOL PARAMETER LIMITS UNIT

V V V I V I T

CC IH IL

IK

OH

OL

amb

Supply voltage 4.5 5.0 5.5 V High-level input voltage 2.0 V Low-level input voltage 0.8 V Input clamp current –18 mA High-level output voltage 4.5 V Low-level output current Operating free-air temperature range 0 70 °C

PARAMETER RATING UNIT

CC

128 mA

V

MIN NOM MAX

64 mA

DC ELECTRICAL CHARACTERISTICS

(Over recommended operating free-air temperature range unless otherwise noted.)

SYMBOL

I

OH

V

OL

V

IK

I

IH

I

IL

High-level output current Low-level output voltage

Input clamp voltage VCC = MIN, II = I Input current at maximum input voltage VCC = MAX, VI = 7.0V 100 µA High-level input current VCC = MAX, VI = 2.7V 20 µA Low-level input current VCC = MAX, VI = 0.5V –1.0 mA

pp

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.

2. All typical values are at V

PARAMETER TEST LIMITS UNIT

1

MIN TYP2MAX

250 µA

CC

0.38 0.55 V

0.42 0.55 V

–0.73 –1.2 V

20 30 mA 50 70 mA 30 40 mA 55 80 mA 25 37 mA 55 80 mA

= 5V, T

CC

amb

= 25°C.

VCC = MIN, VIL = MAX, VIH = MIN, VOH = MAX

VCC = MIN,

=

IL

VIH = MIN,

I

CCH

I

CCL

I

CCH

I

CCL

I

CCH

I

CCL

CC

=

CONDITIONS

IOL = 48MAX ±10%V

,

IOL= 64mA ±5%V

IK

1989 Nov 27

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Philips Semiconductors Product specification

74F756

74F757

74F760

74F756/74F757/74F760Buffers

AC ELECTRICAL CHARACTERISTICS

LIMITS

T

= +25°C T

amb

SYMBOL PARAMETER TEST VCC = +5.0V VCC = +5.0V ± 10% UNIT

CONDITION CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω

MIN TYP MAX MIN MAX

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

PHL

Propagation delay Ian, Ibn to Yn

Propagation delay OEn to Yn

Propagation delay Ian, Ibn to Yn

Propagation delay OE

a or OEb to Yn

Propagation delay Ian, Ibn to Yn

Propagation delay OEn to Yn

Waveform 1, 2

8.5

1.0

9.0

5.0

7.5

3.0

9.0

4.5

7.5

3.5

9.5

5.0

11.0

3.0

11.5

7.0

10.5

5.5

10.5

7.0

10.0

5.5

11.5

7.0

14.0

6.0

14.5

10.0

13.5

8.5

15.0

10.0

13.5

8.5

14.5

10.5

= 0°C to +70°C

amb

8.5

1.0

9.0

4.5

7.5

3.0

8.5

4.0

7.5

3.0

9.0

4.5

15.0

6.5

15.0

10.5

14.0

9.0

16.0

10.5

14.0

9.0

15.0

10.5

ns

AC WAVEFORMS

For all waveforms, VM = 1.5V.

Ian, Ibn, OEn

Waveform 1. Propagation Delay for Inverting Outputs

V

M

t

PHL

Yn

V

M

t

PLH

V

M

SF01256

Ian, Ibn,

a, OEb

OE

V

M

t

PLH

Yn

V

M

Waveform 2. Propagation Delay for Non-invertIng Outputs

TYPICAL PROPAGATION DELAYS VERSUS LOAD FOR OPEN COLLECTOR OUTPUTS

18

16

PROPAGATION

DELAY (ns)

14

12

10

8

6

4

t

PLH

t

PHL

V

M

t

PHL

V

M

SF01257

2

0

0 100 200 300 400 500 600

LOAD RESISTOR ()

SF01258

NOTE:

When using open-collector parts, the value of the pull-up resistor greatly affects the value of the t value from 500 to 100 will improve the t user must make certain that the total I

up to 50% with only slight increase in the t

PLH

current through the resistor and the total IIL’s of the receivers do not exceed the IOL maximum

OL

. However, if the pull-up resistor is changed, the

PHL

specification.

1989 Nov 27

7

. For example, changing the pull-up resistor

PLH

Philips Semiconductors Product specification

74F756/74F757/74F760Buffers

TEST CIRCUIT AND WAVEFORMS

7.0V

R

L

C

R

L

PULSE

GENERATOR

V

CC

V

IN

R

T

D.U.T.

V

OUT

Test Circuit for Open Collector Outputs

DEFINITIONS:

= Load resistor;

R

L

see AC electrical characteristics for value.

= Load capacitance includes jig and probe capacitance;

C

L

see AC electrical characteristics for value.

R

= Termination resistance should be equal to Z

T

pulse generators.

OUT

of

NEGATIVE PULSE

POSITIVE PULSE

family

74F

90%

10%

amplitude

t

w

V

M

10%

t

V

90%

M

THL (tf

t

TLH (tr

)

t

TLH (tr

t

THL (tf

t

w

Input Pulse Definition

INPUT PULSE REQUIREMENTS

V

rep. rate

M

3.0V 1.5V

1MHz 500ns

10%

)

90%

t

w

V

M

V

M

90%

10%

t

TLHtTHL

2.5ns 2.5ns

AMP (V)

0V

AMP (V)

0V

SF00027

1989 Nov 27

8

Philips Semiconductors Product specification

Buffers

DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1

74F760

74F756, 74F757,

1989 Nov 27

9

Philips Semiconductors Product specification

Buffers

SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1

74F760

74F756, 74F757,

1989 Nov 27

10

Philips Semiconductors Product specification

Buffers

74F756, 74F757, 74F760

NOTES

1989 Nov 27

11

Philips Semiconductors Product specification

Buffers

Data sheet status

Objective specification

Preliminary specification

Product specification

Product status

Development

Qualification

Production

74F756, 74F757, 74F760

Definition

This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice.

This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make chages at any time without notice in order to improve design and supply the best possible product.

This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.

[1]

[1] Please consult the most recently issued datasheet before initiating or completing a design.

Definitions

Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For

detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one

or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.

Disclaimers

Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can

reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.

Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381

 Copyright Philips Electronics North America Corporation 1998

print code Date of release: 10-98 Document order number: 9397-750-05176

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yyyy mmm dd

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