Texas Instruments JM38510-33004BDA, JM38510-33004BCA, JM38510-33004B2A, SN54F20J, SN74F20D Datasheet

SN54F20, SN74F20

DUAL 4-INPUT POSITIVE-NAND GATES

SDFS041A – MARCH 1987 – REVISED OCT OBER 1993

Copyright  1993, Texas Instruments Incorporated

2–1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

• Package Options Include Plastic

Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs

description

These devices contain two independent 4-input
NAND gates. They perform the Boolean functions
Y = A

• B • C • D or Y = A + B + C + D in positive

logic.
The SN54F20 is characterized for operation over

the full military temperature range of –55°C to
125°C. The SN74F20 is characterized for
operation from 0°C to 70°C.

FUNCTION TABLE
(each gate)

INPUTS

OUTPUT

A B C D

Y

H H H H L
L XXX H
XLXX H
XXLX H
XXXL H

logic symbol

†

&

1Y

6

2Y

8

1

1A

2

1B

4

1C

5

1D

9

2A

10

2B

12

2C

13

2D

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the D, J, and N packages.

logic diagram, each gate (positive logic)

Y

A
B
C
D

SN54F20 ...J PACKAGE

SN74F20 ...D OR N PACKAGE

(TOP VIEW)

SN54F20 . . . FK PACKAGE

(TOP VIEW)

3212019

910111213

4
5
6
7
8

18
17
16
15
14

2C
NC
NC
NC
2B

NC
NC

1C

NC

1D

1B1ANC

2Y

2A

V

2D

1Y

GND

NC

CC

NC – No internal connection

1
2
3
4
5
6
7

14
13
12
11
10

9
8

1A
1B

NC

1C
1D
1Y

GND

V

CC

2D
2C
NC
2B
2A
2Y

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

SN54F20, SN74F20
DUAL 4-INPUT POSITIVE-NAND GATES

SDFS041A – MARCH 1987 – REVISED OCT OBER 1993

2–2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

†

Supply voltage range, V

CC

–0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage range, V

I

(see Note 1) –1.2 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input current range –30 mA to 5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range applied to any output in the high state –0.5 V to V

CC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Current into any output in the low state 40 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range: SN54F20 –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74F20 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.

recommended operating conditions

SN54F20 SN74F20

MIN NOM MAX MIN NOM MAX

UNIT

V

CC

Supply voltage 4.5 5 5.5 4.5 5 5.5 V

V

IH

High-level input voltage 2 2 V

V

IL

Low-level input voltage 0.8 0.8 V

I

IK

Input clamp current –18 –18 mA

I

OH

High-level output current –1 –1 mA

I

OL

Low-level output current 20 20 mA

T

A

Operating free-air temperature –55 125 0 70 °C

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

SN54F20 SN74F20

PARAMETER

TEST CONDITIONS

MIN TYP‡MAX MIN TYP‡MAX

UNIT

V

IK

VCC = 4.5 V, II = –18 mA –1.2 –1.2 V
VCC = 4.5 V, IOH = – 1 mA 2.5 3.4 2.5 3.4

V

OH

VCC = 4.75 V , IOH = – 1 mA 2.7

V

V

OL

VCC = 4.5 V, IOL = 20 mA 0.3 0.5 0.3 0.5 V

I

I

VCC = 5.5 V, VI = 7 V 0.1 0.1 mA

I

IH

VCC = 5.5 V, VI = 2.7 V 20 20 µA

I

IL

VCC = 5.5 V, VI = 0.5 V – 0.6 – 0.6 mA

I

OS

§

VCC = 5.5 V, VO = 0 –60 –150 –60 –150 mA

I

CCH

VCC = 5.5 V, VI = 0 0.9 1.4 0.9 1.4 mA

I

CCL

VCC = 5.5 V, VI = 4.5 V 3.4 5.1 3.4 5.1 mA

‡

All typical values are at VCC = 5 V, TA = 25°C.

§

Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.