Texas Instruments SN74HCT08D, SN74HCT08DBLE, SN74HCT08DBR, SN74HCT08DR, SN74HCT08N Datasheet

SN54HCT08, SN74HCT08

QUADRUPLE 2-INPUT POSITIVE-AND GATES

SCLS063B – NOVEMBER 1988 – REVISED MA Y 1997

D

Inputs Are TTL-Voltage Compatible

D

Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), Thin Shrink Small-Outline (PW), and
Ceramic Flat (W) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs

description

These devices contain four independent 2-input
AND gates. They perform the Boolean function

Y+A • BorY+A)B

The SN54HCT08 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74HCT08 is characterized for
operation from –40°C to 85°C.

FUNCTION TABLE

(each gate)

INPUTS

A B

H H H

L XL

X L L

logic symbol

†

in positive logic.

OUTPUT

Y

SN54HCT08 ...J OR W PACKAGE

SN74HCT08 . . . D, DB, N, OR PW PACKAGE

SN54HCT08 . . . FK PACKAGE

1Y

NC

2A

NC

2B

NC – No internal connection

(TOP VIEW)

1A

1

1B

2

1Y

3

2A

4

2B

5
6

2Y

GND

7

(TOP VIEW)

1B1ANC

3212019

4
5
6
7
8

910111213

2Y

GND

NC

14
13
12
11
10

9
8

V

3Y

CC

V
4B
4A
4Y
3B
3A
3Y

4B

18
17
16
15
14

3A

CC

4A
NC
4Y
NC
3B

1

1A

2

1B

4

2A

5

2B

9

3A

10

3B

12

4A

13

4B

†

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

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

&

logic diagram (positive logic)

A
B

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

3

1Y

6

2Y

8

3Y

11

4Y

Y

UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Copyright  1997, Texas Instruments Incorporated

1

SN54HCT08, SN74HCT08

UNIT

PARAMETER

TEST CONDITIONS

V

UNIT

V

V

V

V

4.5 V

V

V

V

V

V

4.5 V

V

QUADRUPLE 2-INPUT POSITIVE-AND GATES

SCLS063B – NOVEMBER 1988 – REVISED MA Y 1997

absolute maximum ratings over operating free-air temperature range

Supply voltage range, V

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

CC

†

Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous output current, IO (VO = 0 to VCC) ±25 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous current through VCC or GND ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance, θ

(see Note 2): D package 127°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

JA

DB package 158°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

N package 78°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PW package 170°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

†

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.

NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

recommended operating conditions

SN54HCT08 SN74HCT08

MIN NOM MAX MIN NOM MAX

V
V
V
V
V
t

t

T

Supply voltage 4.5 5 5.5 4.5 5 5.5 V

CC

High-level input voltage VCC = 4.5 V to 5.5 V 2 2 V

IH

Low-level input voltage VCC = 4.5 V to 5.5 V 0 0.8 0 0.8 V

IL

Input voltage 0 V

I

Output voltage 0 V

O

Input transition (rise and fall) time 0 500 0 500 ns
Operating free-air temperature –55 125 –40 85 °C

A

CC
CC

0 V
0 V

CC
CC

V
V

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

CC

=

OH

OL

I

I

I

CC

‡

∆I

CC

C

i

‡

This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or VCC.

PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.

or

I

IH

=

or

I

IH

VI = VCC or 0 5.5 V ±0.1 ±100 ±1000 ±1000 nA
VI = VCC or 0, IO = 0 5.5 V 2 40 20 µA
One input at 0.5 V or 2.4 V,

Other inputs at 0 or V

IL

IL

IOH = –20 µA
IOH = –4 mA
IOL = 20 µA
IOL = 4 mA

CC

5.5 V 1.4 2.4 3 2.9 mA

4.5 V

to 5.5 V

TA = 25°C SN54HCT08 SN74HCT08

MIN TYP MAX MIN MAX MIN MAX

4.4 4.499 4.4 4.4

3.98 4.3 3.7 3.84

0.001 0.1 0.1 0.1

0.17 0.26 0.4 0.33

3 10 10 10 pF

2

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