Philips 74F257A Datasheet

INTEGRATED CIRCUITS

74F257A

Quad 2-line to 1-line selector/multiplexer,
non-inverting (3-State)

Product specification 1995 Mar 31
IC15 Data Handbook

Philips Semiconductors

Philips Semiconductors Product specification

DRAWING

Quad 2-line to 1-line selector/multiplexer, non-inverting
(3-State)

FEA TURES

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

•Multifunction capability

•Non-inverting data path

•3-State outputs

•See 74F258A for inverting version

DESCRIPTION

The 74F257A has four identical 2-input multiplexers with 3-State
outputs which select 4 bits of data from two sources uncer control of
a common Select (S) input. The I0a inputs are selected when the
common Select input is Low and the I1n inputs are selected when
the common Select input is High. Data appears at the outputs in true
non-inverted form from the selected inputs. The 74F257A is the logic
implementation of a 4-pole, 2-position switch where the position of
the switch is determined by the logic levels supplied to the common
Slect input. Outputs are forced to a high impedance “off” state when
the Output Enable (OE
impedance state to avoid currents that would exceed the maximum
rating if the outputs were tied together. Design of the Output Enable
signals must ensure that there is no overlap when outputs of 3-state
devices were tied together.

) is High. All but one device must be in high

PIN CONFIGURATION

S
I0a
I1a

Ya
I0b
I1b

Yb

TYPE

74F257A 4.3ns 12mA

TYPICAL

PROPAGATION DELAY

74F257A

1
2
3
4
5
6

16

V

CC

15

OE

14

I0d

13

I1d
Yd

12

I0c

11
107

I1c

98GND Yc

SF00673

TYPICAL

SUPPLY CURRENT

(TOTAL)

ORDERING INFORMATION

ORDER CODE

DESCRIPTION

COMMERCIAL RANGE

VCC = 5V ±10%, T

= 0°C to +70°C

amb

VCC = 5V ±10%, T

INDUSTRIAL RANGE

= –40°C to +85°C

amb

16-pin plastic DIP N74F257AN I74F257AN SOT38-4

16-pin plastic SO N74F257AD I74F257AD SOT109-1

INPUT AND OUTPUT LOADING AND FAN-OUT TABLE

PINS DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW

I0n, I1n Data inputs 1.0/1.0 20µA/0.6mA

S Common Select input 1.0/1.0 20µA/0.6mA

OE Output Enable input (active Low) 1.0/1.0 20µA/0.6mA

Ya – Yd Data outputs 150/33 3.0mA/20mA

NOTE:

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

LOGIC SYMBOL

1

15

VCC = Pin 16
GND = Pin 8

S
OE

2356111014

I0a I1a I0b I1b I0c I1c I0d

Ya Yb Yc Yd

47912

SF00674

13

I1d

LOGIC SYMBOL (IEEE/IEC)

15
1

2
3

5
6

10
11

13
14

EN
G1

1
1

MUX

4

7

9

12

SF00675

NUMBER

1995 Mar 31 853–0360 15059

2

Philips Semiconductors Product specification

Quad 2-line to 1-line selector/multiplexer, non-inverting
(3-State)

LOGIC DIAGRAM

I0a I1a I0b I1b I0c I1c I0d I1dOE S

2 3 5 6 11 10 14 1315 1

47912

Ya Yb Yc Yd

= Pin 16

V

CC

GND = Pin 8

SF00676

FUNCTION TABLE

OE S I0 I1 Y

H X X X Z

L H X L L
L H X H H
L L L X L
L L H X H

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

74F257A

INPUTS OUTPUT

APPLICATION

S2

S1

S0

4-BIT
DATA
BUS

ENABLE

WORD A WORD B WORD C WORD D WORD E WORD F WORD G WORD H

I0a I1a I0b I1b I0c I1c I0d I1d

OE
S

Ya Yb Yc Yd

I0a I1a I0b I1b I0c I1c I0d I1d

OE
S

Ya Yb Yc Yd

C
B
A

Y0 Y1 Y2 Y3

74F139

I0a I1a I0b I1b I0c I1c I0d I1d

OE
S

Ya Yb Yc Yd

I0a I1a I0b I1b I0c I1c I0d I1d

OE
S

74F257A74F257A74F257A74F257A

Ya Yb Yc Yd

SF00677

1995 Mar 31

3

Philips Semiconductors Product specification

T

Operating free-air temperature range

SYMBOL

PARAMETER

UNIT

T

Operating free-air temperature range

Quad 2-line to 1-line selector/multiplexer, non-inverting
(3-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
V
I

IN

V
I

OUT

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 48 mA

p

p

Storage temperature range –65 to +150 °C

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 –3 mA
Low-level output current 24 mA

p

p

PARAMETER RATING UNIT

Commercial range 0 to +70 °C

Industrial range –40 to +85 °C

Commercial range 0 +70 °C

Industrial range –40 +85 °C

CC

LIMITS

MIN NOM MAX

74F257A

V

1995 Mar 31

4

Philips Semiconductors Product specification

SYMBOL

PARAMETER

TEST CONDITIONS

1

UNIT

VOHHigh-level output voltage

CC

,

IL

,

VOLLow-level output voltage

CC

,

IL

,

Quad 2-line to 1-line selector/multiplexer, non-inverting

(3-State)

DC ELECTRICAL CHARACTERISTICS

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

LIMITS

MIN TYP

±10%V

±5%V

±10%V

±5%V

V
I

I

I

IH

I

IL

I

OZH

I

OZL

I

OS

I

CC

p

p

IK

Input clamp voltage VCC = MIN, II = I

VCC = MIN, VIL = MAX,
VIH = MIN, IOH = MAX

VCC = MIN, VIL = MAX,
VIH = MIN, I

OL

= MAX

IK

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 –0.6 mA
Off state output current,

High-level voltage applied
Off state output current,

Low-level voltage applied
Short-circuit output current

Supply current4 (total)

3

I

CCH

I

CCL

I

CCZ

VCC = MAX, VO = 2.7V 50 µA

VCC = MAX, VO = 0.5V –50 µA

VCC = MAX -60 –150 mA

VCC = MAX

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

3. Not more than one output should be shorted at a time. For testing I

= 5V, T

CC

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

4. Measure I

with all outputs open and inputs grounded.

CC

tests should be performed last.

OS

2.4 V

CC

2.7 3.3 V

CC

CC

CC

0.35 0.50 V

0.35 0.50 V

–0.73 –1.2 V

9.0 15.0 mA

14.5 22.0 mA

15.0 23.0 mA

74F257A

2

MAX

AC ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER

t

PLH

t

PHL

t

PLH

t

PHL

t

PZH

t

PZL

t

PHZ

t

PLZ

1995 Mar 31

Propagation delay
In to Yn

Propagation delay
S to Yn

Output Enable time
to High or Low level

Output Disable time
from High or Low level

TEST

CONDITION

Waveform 1

Waveform 1
Waveform 2

Waveform 3
Waveform 2

Waveform 3

LIMITS

T

= +25°C

amb

VCC = +5.0V

C

= 50pF

L

R

= 500Ω

L

T

= 0°C to +70°C

amb

VCC = +5.0V ± 10%

C

= 50pF

L

R

= 500Ω

L

T

= –40°C to +85°C

amb

VCC = +5.0V ± 10%

C

= 50pF

L

R

= 500Ω

L

MIN TYP MAX MIN MAX MIN MAX

3.0

4.5

2.0

5.0

4.0

4.5

4.5

2.0

2.0

3.5

7.5

5.5

6.5

6.0

4.0

3.5

6.0

5.0

9.5

7.0

7.5

7.5

5.5

5.5

3.0

2.0

5.0

4.0

4.5

4.5

2.0

2.0

7.0

6.0

10.5

8.0

8.5

8.5

6.0

6.0

3.0

2.0

5.0

4.0

4.5

4.5

2.0

2.0

7.0

7.0

10.5

8.5

8.5

8.5

6.0

6.0

5

UNIT

ns

ns

ns

ns

Philips Semiconductors Product specification

Quad 2-line to 1-line selector/multiplexer, non-inverting

(3-State)

AC WAVEFORMS

For all waveforms, VM = 1.5V.

In or S

Yn

Waveform 1. Propagation Delay, Data and Select to Output

OE

Yn

V

M

t

PHL

V

M

t

PZH

V

M

t

PLH

V

M

V

M

V

M

SF00679

OE

V

M

t

PHZ

VOH–0.3V

0V

Yn

74F257A

V

M

t

PZL

V

M

t

PLZ

V

M

VOL+0.3V

SF00213

Waveform 2. 3-State Output Enable Time to High Level and

Output Disable Time from High Level

TEST CIRCUIT AND WAVEFORMS

V

CC

R

PULSE

GENERATOR

V

IN

R

T

D.U.T.

V

OUT

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.

C

= Load capacitance includes jig and probe capacitance;

L

see AC electrical characteristics for value.

= Termination resistance should be equal to Z

R

T

pulse generators.

L

C

R

L

L

of

OUT

7.0V
NEGATIVE

PULSE

POSITIVE
PULSE

family

74F

SF00214

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

Output Disable Time from Low Level

90%

10%

t

w

V

M

10%

)

V

90%

M

t

THL (tf

t

TLH (tr

)

t

t

t

w

TLH (tr

THL (tf

10%

)

)

90%

V

M

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

TLH

t

THL

2.5ns 2.5ns

SF00777

1995 Mar 31

6

Philips Semiconductors Product specification

74F257AQuad 2-line 1-line selector/multiplexer, non-inverting (3-State)

DIP16: plastic dual in-line package; 16 leads (300 mil) SOT38-4

1995 Mar 31

7

Philips Semiconductors Product specification

74F257AQuad 2-line 1-line selector/multiplexer, non-inverting (3-State)

SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1

1995 Mar 31

8