Datasheet 74f656a DATASHEETS (Philips)

INTEGRATED CIRCUITS

74F656A

Octal buffer/driver with parity, non-inverting (3-State)

Product specification Supersedes data of 1991 Jul 17 IC15 Data Handbook

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2000 Jun 30

Philips Semiconductors Product specification

Octal buffer/driver with parity, non-inverting (3-State)

FEA TURES

•Significantly improved AC performance over 74F656

•High impedance NPN base input for reduced loading

(40µA in High and Low states)

•Ideal in applications where high output drive and light bus loading

are required (I

is 40µA vs. FAST std of 600µA)

IL

•74F656A combines 74F244 and 74F280A functions in one

package

•Non-inverting

•3-State outputs sink 64mA and source 15mA

•24-pin plastic Slim DIP (300mil) package

•Inputs on one side and outputs on the other side simplifies PC

board layout

•Combined functions reduce part count and enhance system

performance

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

DESCRIPTION

The 74F656A is an octal buffer and line driver with parity generation/checking designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers. These parts include parity generator/checker to improve PC board density.

TYPICAL

TYPE

74F656A 6.5ns 64mA

PROPAGATION

DELA Y

74F656A

TYPICAL SUPPL Y CURRENT

(TOTAL)

ORDERING INFORMATION

COMMERCIAL RANGE

DESCRIPTION

24-pin Plastic Slim

DIP (300mil)

24-pin Plastic SOL N74F656AD I74F656AD SOT137-1

VCC = 5V ±10%,

T

= 0°C to +70°C

amb

N74F656AN I74F656AN SOT222-1

INDUSTRIAL RANGE

VCC = 5V ±10%,

T

= –40°C to +85°C

amb

PKG DWG #

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS DESCRIPTION

D0–D7 Data inputs 2.0/0.066 40µA/40µA PI Parity input 1.0/0.033 20µA/20µA OE0, OE1, OE2 Output Enable Inputs (active Low) 1.0/0.033 20µA/20µA ΣE, ΣO Parity outputs 750/106.7 15mA/64mA Q0–Q7 Data outputs 750/106.7 15mA/64mA

NOTE: One (1.0) FAST Unit Load (U.L.) is defined as: 20µA in the High state and 0.6mA in the Low state.

74F(U.L.)

HIGH/LOW

LOAD VALUE

HIGH/LOW

2000 Jun 30 853-0383 24025

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Philips Semiconductors Product specification

Octal buffer/driver with parity, non-inverting (3-State)

PIN CONFIGURATION

OE OE

GND

LOGIC SYMBOL

0

1

2

PI

3

D0

4

D1

5

D2

6

D3

7

D4

8

D5

9

D6

10

D7

11

24 23 22 21 20 19 18 17 16 15 14 1312

SF01169

VCC OE2

ΣO ΣE

Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7

74F656A

4567891011

D0 D1 D2 D3 D4 D5 D6 D7

PI

3

OE0

1

OE1

2

23

VCC=Pin 24 GND=Pin 12

OE2

Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7

20 19 18 17 16 15 14 13

LOGIC SYMBOL (IEEE/IEC)

2K

3,5,6,7,8 9,10,11,12

3

1 2

23

4 5 6 7 8 9 10

P3

≥1

Z5 Z6 Z7 Z8

Z9 Z10 Z11 Z12

3,5,6,7,8 9,10,11,12

EN4

[EVEN]

[ODD]

21

ΣE

22

ΣO

SF01171

21 22

4

20 19 18 17 16 15 14 1311

SF01173

2000 Jun 30

3

Philips Semiconductors Product specification

Octal buffer/driver with parity, non-inverting (3-State)

LOGIC DIAGRAM

3

PI

74F656A

21

ΣE

22

ΣO

D0

D1

D2

D3

D4

D5

D6

D7

0

OE

OE1

2

OE

VCC = Pin 24

GND = Pin 12

2000 Jun 30

4

5

6

7

8

9

10

11

1

23

2

20

Q0

19

Q1

18

Q2

17

Q3

16

Q4

15

Q5

14

Q6

13

Q7

SF01175

4

Philips Semiconductors Product specification

OE0

OE1

OE2DnQn

T

Operating free-air temperature range

SYMBOL

PARAMETER

UNIT

T

Operating free-air temperature range

Octal buffer/driver with parity, non-inverting (3-State)

FUNCTION TABLE

INPUTS OUTPUTS

L L L L L

L L L H H H X X X Z X H X X Z X X H X Z

H = High voltage level L = Low voltage level X = Don’t care Z = High impedance “off” state

ABSOLUTE MAXIMUM RATINGS

(Operation beyond the limits 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

CC

V

IN

I

IN

V

OUT

I

OUT

amb

T

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 128 mA

p

Storage temperature range –65 to +150 °C

PARAMETER RATING UNIT

Commercial range 0 to +70 °C Industrial range –40 to +85 °C

FUNCTION TABLE for PARITY OUTPUTS

Number of inputs, High (PI, D0–D7) ΣE Σ0 Even - 0, 2, 4, 6, 8 H L Odd - 1, 3, 5, 7, 9 L H Any OEn = High Z Z

H = High voltage level L = Low voltage level Z = High impedance “off” state

INPUTS

74F656A

PARITY

OUTPUTS

CC

V

RECOMMENDED OPERATING CONDITIONS

V V V I I I

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 current –15 mA Low-level output current 64 mA

p

LIMITS

MIN NOM MAX

Commercial range 0 70 °C Industrial range –40 85 °C

2000 Jun 30

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Philips Semiconductors Product specification

SYMBOL

PARAMETER

TEST CONDITIONS

1

V

CC

MIN

I

3mA

V

MIN

VOLLow-level output voltage

V

MAX

I

64mA

Commercial

I

High level

V

MAX, V

7V

Industrial

IILLow-level input current

V

MAX, V

5V

(total)

TEST

V

0V

V

10%

V

10%

CONDITIONS

C

L

50pF,

C

L

50pF,

C

L

50pF,

Octal buffer/driver with parity, non-inverting (3-State)

74F656A

DC ELECTRICAL CHARACTERISTICS

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

LIMITS UNIT

MIN TYP

V

V I

I

IH

I

OZH

I

OZL

I

OS

I

CC

OH

IK

High-level output voltage

VIL = MAX

=

IH

,

= –

OH

IOH = –15mA ±10%V

=

VCC = MIN,

p

=

IL

VIH = MIN

OL

=

Input clamp voltage VCC = MIN, II = I

±10%V

±5%V

±10%V

±5%V

IK

Input current at maximum input voltage VCC = 0.0, VI = 7.0V 100 µA

Commercial

High-level input current

range

Industrial

range

p

Off-state current High-level voltage applied

Off-state current Low-level voltage applied

Short-circuit output current

Supply current

Dn 40

Pl, OEn

Dn

CC

=

= 2.

I

Pl, OEn 40

Dn

Pl, OEn

CC

=

= 0.

I

VCC = MAX, VO = 2.7V 50

VCC = MAX, VO = 0.5V –50 µA

3

I

CCH

I

CCL

I

CCZ

VCC = MAX –100 –225 mA

VCC = MAX

2.4 V

CC

2.7 3.3 V

CC

2.0 V

CC CC

CC

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 VCC = 5V, T

3. Not more than one output should be shorted at a time. For testing I techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting

amb

= 25°C.

, the use of high-speed test apparatus and/or sample-and-hold

OS

of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any sequence of parameter tests, I

tests should be performed last.

OS

2

MAX

0.55 V

0.42 0.55 V

–0.73 –1.2 V

20 80

–40 µA –20 µA

50 80 mA 78 110 mA 83 90 mA

µA µA µA µA

µA

AC ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER

t

PLH

t

PHL

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t

PLZ

2000 Jun 30

Propagation delay Dn to Qn

Propagation delay Dn to ΣE, ΣO

Output enable time to High or Low level

Output disable time from High or Low level

CONDITIONS

Waveform 1

Waveform 1, 2

Waveform 3 Waveform 4

LIMITS

T

= +25°C,

amb

CC

C

= 50pF,

=

R

= 500Ω

L

= +5.

T

= 0°C to +70°C

amb

= +5.0V ±

CC

C

= 50pF,

=

R

= 500Ω

L

T

= –40°C to +85°C

amb

= +5.0V ±

CC

C

= 50pF,

=

R

= 500Ω

L

MIN TYP MAX MIN MAX MIN MAX

2.0

4.0

2.5

5.5

3.5

4.0

1.5

2.0

5.5

10.0

11.0

7.0

8.0

4.5

5.0

6.5

7.0

13.0

14.5

10.5

11.0

8.0

2.0

2.5

5.5

3.5

4.5

1.5

2.0

7.0

7.5

14.0

16.5

11.5

12.0

9.0

2.0

2.5

4.5

5.5

3.0

4.0

1.5

8.0

9.0

16.5

18.0

13.0

13.5

10.0

6

UNIT

ns ns

Philips Semiconductors Product specification

Octal buffer/driver with parity, non-inverting (3-State)

AC WAVEFORMS

Dn

SE, SO, Qn

V

M

t

PLH

Waveform 1. Propagation Delay, Non-Inverting Outputs

OE

n

SE, SO, Qn, Qn

V

t

PZH

M

V

M

Waveform 3. 3-State Output Enable Time to High Level

and Output Disable Time from High Level

V

M

t

PHL

V

M

V

M

SF00965

Dn

SE, SO, Qn

Waveform 2. Propagation Delay, Inverting Outputs

OE

n

SE, SO, Qn, Qn

t

PHZ

V

M

VOH -0.3V

0V

SF00967

Waveform 4. 3-State Output Enable Time to Low Level

74F656A

V

M

t

PHL

V

M

t

PZL

V

M

and Output Disable Time from Low Level

V

M

t

PLH

V

M

SF00966

V

M

t

PLZ

V

M

VOL +0.3V

SF00968

TEST CIRCUIT AND WAVEFORM

V

CC

V

PULSE

GENERATOR

IN

R

T

Test Circuit for 3-State Outputs

SWITCH POSITION

TEST SWITCH

t t

PLZ PZL

closed closed

All other open

DEFINITIONS:

R

= Load resistor;

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.

D.U.T.

V

OUT

t

7.0V

R

L

R

C

L

NEGATIVE PULSE

POSITIVE PULSE

90%

10%

V

M

10%

t

THL (tf

t

TLH (tr

90%

V

M

w

V

M

10%

)

t

w

t

TLH (tr

t

THL (tf

)

90%

V

M

90%

10%

AMP (V)

0V

AMP (V)

0V

Input Pulse Definition

INPUT PULSE REQUIREMENTS

V

amplitude

3.0V

M

1.5V

rep. rate

1MHz 500ns

t

w

t

TLHtTHL

2.5ns 2.5ns

SF00777

OUT

of

family

74F

2000 Jun 30

7

Philips Semiconductors Product specification

74F656AOctal buffer/driver with parity, non-inverting (3-State)

DIP24: plastic dual in-line package; 24 leads (300 mil) SOT222-1

2000 Jun 30

8

Philips Semiconductors Product specification

74F656AOctal buffer/driver with parity, non-inverting (3-State)

SO24: plastic small outline package; 24 leads; body width 7.5 mm SOT137-1

2000 Jun 30

9

Philips Semiconductors Product specification

74F656AOctal buffer/driver with parity, non-inverting (3-State)

Data sheet status

Objective specification

Preliminary specification

Product specification

Product status

Development

Qualification

Production

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 changes 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 2000

Date of release: 06-00

Document order number: 9397-750 07278

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