Diodes 74AHCT08 User Manual

74AHCT08

QUADRUPLE 2-INPUT AND GATES

Description

The 74AHCT08 provides provides four independent 2-input AND

gates with standard push-pull outputs. The device is designed for

operation with a power supply range of 4.5V to 5.5V.

The gates perform the Boolean function:

Pin Assignments

BAY •=

or

BAY +=

Features

• Wide Supply Voltage Range from 4.5V to 5.5V

• Inputs Are TTL Voltage Level Compatible

• Outputs Sink or Source 8mA at V

• CMOS Low Power Consumption

NEW PRODUCT

• Schmitt Trigger Action at All Inputs

• ESD Protection Exceeds JESD 22

 200-V Machine Model (A115-A)

 2000-V Human Body Model (A114-A)

 Exceeds 1000-V Charged Device Model (C101C)

• Latch-Up Exceeds 250mA per JESD 78, Class II

• Range of Package Options SO-14 and TSSOP-14

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

74AHCT08

Document number: DS35351 Rev. 3 - 2

= 4.5V

CC

Applications

• General Purpose Logic

• Wide array of products such as:

 PCs, Networking, Notebooks, Netbooks

 Computer Peripherals, Hard Drives, CD/DVD ROM

 TV, DVD, DVR, Set Top Box

Click here for ordering information, located at the end of datasheet

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Pin Descriptions

Number

1 1A Data Input

2 1B Data Input

3 1Y Data Output

4 2A Data Input

5 2B Data Input

6 2Y Data Output

7 GND Ground

8 3Y Data Output

9 3A Data Input

10 3B Data Input

11 4Y Data Output

12 4A Data Input

13 4B Data Input

14

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Pin Name Function

V

CC

Supply Voltage

Logic Diagram

Function Table

Inputs Output

A B Y

L L L

L H L

H L L

Absolute Maximum Ratings (Note 4) (@T

Note: 4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be within recommend values.

74AHCT08

Document number: DS35351 Rev. 3 - 2

H H H

= +25°C, unless otherwise specified.)

A

Symbol Description Rating Unit

ESD HBM Human Body Model ESD Protection 2 KV

ESD CDM Charged Device Model ESD Protection 1 KV

ESD MM Machine Model ESD Protection 200 V

VCC

VI

IIK Input Clamp Current V

IOK Output Clamp Current VO < 0V

IOK Output Clamp Current VO > VCC

IO Continuous Output current 0V < V

ICC Continuous Current Through V

I

GND

TJ

T

STG

P

TOT

Supply Voltage Range -0.5 to +7.0 V

Input Voltage Range -0.5 to +7.0 V

< -0.5V

I

< VC

O

CC

Continuous Current Through GND -50 mA

Operating Junction Temperature -40 to +150 °C

Storage Temperature -65 to +150 °C

Total Power Dissipation 500 mW

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-20 mA

20 mA

+/- 25 mA

50 mA

74AHCT08

January 2013

Recommended Operating Conditions (Note 5) (@T

Symbol Parameter Min Max Unit

VCC

VO

Supply Voltage 4.5 5.5 V

Input Voltage 0 5.5 V

VI

Output Voltage 0

Δt/ΔV Input transition rise or fall rate 20 ns/V

TA

Note: 5. Unused inputs should be held at VCC or Ground.

Operating Free-Air Temperature -40 +125 °C

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

Symbol Parameter Test Conditions

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ΔICC

V

IH

VIL

VOH

VOL

II

ICC

High-Level Input Voltage

Low-Level Input Voltage

High-Level Output Voltage

Low-Level Output Voltage

Input Current

Supply Current

Additional Supply Current

4.5V to 5.5V 2.0 2.0 V

4.5V to 5.5V 0.8 0.8 V

= -50μA

I

OH

IOH = -8mA

= 50μA

I

OL

IOL = 8mA

VI =GND to 5.5V

VI = GND or V

One input at V Other pins at V

CC, IO

-2.1V

CC

or GND

CC

= 0

Operating Characteristics

Test

Conditions

f = 1MHz 14.8 pF

= V

V

– or

i

CC

GND

Cpd

Ci

Parameter

Power Dissipation

Capacitance per Gate

Input Capacitance

Switching Characteristics

Symbol Parameter

tPD

Propagation

Delay A

to YN

N

Test

Conditions

Figure 1

C

= 15pF

L

Figure 1

= 50pF

C

L

V

4.5V to 5.5V 0.5 3.4 6.9 0.5 8.0 0.5 9.0

4.5V to 5.5V 0.5 4.9 10.0 0.5 10.0 0.5 11.0

CC

= +25°C, unless otherwise specified.)

A

VCC

4.5V

4.5V 3.80 3.70

4.5V

3.6V ±1 ±2 μA

3.6V 20 40 μA

5.5V 1.35 5 mA

= 5.5V

V

CC

Typ

4.0 pF

T

Min Typ Max Min Max Min Max

Unit

= +25°C

A

74AHCT08

VCC

TA = -40°C to +85°C TA = -40°C to +125°C

Min Max Min Max

4.4 4.4

0.1 0.1

0.44 0.55

V

-40°C to +85°C -40°C to +125°C Unit

Unit

V

ns

74AHCT08

Document number: DS35351 Rev. 3 - 2

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January 2013