TEXAS INSTRUMENTS SN54HCT08, SN74HCT08 Technical data

SN54HCT08, SN74HCT08

SOIC – D

HCT08

–40°C to 85°C

TSSOP – PW

HT08

–55°C to 125°C

QUADRUPLE 2-INPUT POSITIVE-AND GATES

SCLS063D – NOVEMBER 1988 – REVISED AUIGUST 2003

Operating Voltage Range of 4.5 V to 5.5 V

Outputs Can Drive Up To 10 LSTTL Loads

Low Power Consumption, 20-µA Max I

SN54HCT08 ...J OR W PACKAGE

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

1A 1B 1Y 2A 2B 2Y

GND

(TOP VIEW)

10 6 7

4B 4A 4Y 3B

Typical t

±4-mA Output Drive at 5 V

Low Input Current of 1 µA Max

Inputs Are TTL-Voltage Compatible

= 13 ns

SN54HCT08 . . . FK PACKAGE

NC – No internal connection

(TOP VIEW)

1B1ANC

3212019

4 5 6 7 8

910111213

GND

18 17 16 15 14

4A NC 4Y NC 3B

description/ordering information

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

)

Y+A • BorY+A

in positive logic.

ORDERING INFORMA TION

PDIP – N Tube of 25 SN74HCT08N SN74HCT08N

SOP – NS Reel of 2000 SN74HCT08NSR HCT08 SSOP – DB Reel of 2000 SN74HCT08DBR HT08

CDIP – J Tube of 25 SNJ54HCT08J SNJ54HCT08J CFP – W T ube of 150 SNJ54HCT08W SNJ54HCT08W LCCC – FK Tube of 55 SNJ54HCT08FK SNJ54HCT08FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.

PACKAGE

†

Tube of 50 SN74HCT08D Reel of 2500 SN74HCT08DR Reel of 250 SN74HCT08DT

Tube of 90 SN74HCT08PW Reel of 2000 SN74HCT08PWR Reel of 250 SN74HCT08PWT

ORDERABLE

PART NUMBER

TOP-SIDE MARKING

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

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

SN54HCT08, SN74HCT08

OUTPUT

UNIT

QUADRUPLE 2-INPUT POSITIVE-AND GATES

SCLS063D – NOVEMBER 1988 – REVISED AUIGUST 2003

FUNCTION TABLE

(each gate)

INPUTS

A B

H H H

L XL

X L L

logic diagram (positive logic)

A B

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

Supply voltage range, V Input clamp current, I Output clamp current, I Continuous output current, I Continuous current through V Package thermal impedance, θ

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

(VI < 0 or VI > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(VO < 0 or VO > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(VO = 0 to VCC) ±25 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

or GND ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(see Note 2): D package 86°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

DB package 96°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

N package 80°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NS package 76°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PW package 113°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 51-7.

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

stg

recommended operating conditions (see Note 3)

SN54HCT08 SN74HCT08

MIN NOM MAX MIN NOM MAX

V V V V V ∆t/∆v Input transition rise/fall time 500 500 ns T

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Supply voltage 4.5 5 5.5 4.5 5 5.5 V

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

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

Input voltage 0 V

Output voltage 0 V

Operating free-air temperature –55 125 –40 85 °C

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

CC CC

0 V 0 V

CC CC

V V

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.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54HCT08, SN74HCT08

PARAMETER

TEST CONDITIONS

UNIT

VI = VIH or V

4.5 V

VI = VIH or V

4.5 V

FROM

PARAMETER

FROM

UNIT

tpdA or B

ttY

QUADRUPLE 2-INPUT POSITIVE-AND GATES

SCLS063D – NOVEMBER 1988 – REVISED AUIGUST 2003

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

TA = 25°C SN54HCT08 SN74HCT08

MIN TYP MAX MIN MAX MIN MAX

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

∆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.

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

5.5 V 1.4 2.4 3 2.9 mA

4.5 V

to 5.5 V

switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1)

(INPUT)

(OUTPUT)

4.5 V 15 24 35 30

5.5 V 13 22 32 27

4.5 V 9 15 22 19

5.5 V 8 14 20 17

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

TA = 25°C SN54HCT08 SN74HCT08

MIN TYP MAX MIN MAX MIN MAX

operating characteristics, TA = 25°C

PARAMETER TEST CONDITIONS TYP UNIT

Power dissipation capacitance per gate No load 20 pF

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54HCT08, SN74HCT08

3 V

PLH

PHL

QUADRUPLE 2-INPUT POSITIVE-AND GATES

SCLS063D – NOVEMBER 1988 – REVISED AUIGUST 2003

PARAMETER MEASUREMENT INFORMATION

From Output

Under Test

LOAD CIRCUIT

Input

NOTES: A. CL includes probe and test-fixture capacitance.

B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following

C. The outputs are measured one at a time with one input transition per measurement. D. t

2.7 V 2.7 V

VOLTAGE WAVEFORM

INPUT RISE AND FALL TIMES

characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.

and t

Test Point

CL = 50 pF (see Note A)

are the same as tpd.

3 V

1.3 V1.3 V

0.3 V0.3 V

0 V

Figure 1. Load Circuit and Voltage Waveforms

Input

In-Phase

Output

Out-of-Phase

Output

PROPAGATION DELAY AND OUTPUT RISE AND FALL TIMES

1.3 V

PLH

90% 90%

PHL

1.3 V 1.3 V 10% 10%

VOLTAGE WAVEFORMS

1.3 V 0 V

PHL

1.3 V1.3 V

PLH

10%10%

90%90%

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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