SGS Thomson Microelectronics 74VHCT08ATTR, 74VHCT08AMTR, 74VHCT08AM Datasheet

1/8June 2001

■ HIGH SPEED: t

PD

= 4.7 ns (TYP.) at VCC = 5V

■ LOW POWER DISSIPATION:

I

CC

= 2 µA (MAX.) at TA=25°C

■ COMPATIBLE WITH TTL OU TPUTS:

V

IH

= 2V (M IN.), V

IL

= 0.8V (MAX)

■ POWER DOWN PROTECTION ON INPUTS

& OUTPUTS

■ SYMMETRICAL OUTPUT IMPED ANCE:

|I

OH

| = IOL = 8 mA (MIN)

■ BALANCED PROPAGATION DELAYS:

t

PLH

≅ t

PHL

■ OPERATING VOLTAGE RANGE:

V

CC

(OPR) = 4.5V to 5.5V

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 08

■ IMPROVED LATCH-UP IMMUNITY

■ LOW NOISE: V

OLP

= 0.8V (MAX.)

DESCRIPTION

The 74VHCT08A is an advanced high-speed
CMOS QUAD 2-INPUT AND GATE fabricated
with sub-micron silicon gate and double-layer
metal wiring C

2

MOS technology.
The internal circuit is composed of 2 stages
including buffer ou tput, which provides high noise
immunity and stable output.

Power down protection is provided on all inputs
and outputs and 0 to 7V can be accepted on
inputs with no regard to the supply voltage. This
device can be us ed to interf ac e 5V to 3V since al l
inputs are equipped with TTL threshold.
All inputs and outputs are equipped with
protection circuits against stat ic discharge, giving
them 2KV ESD immunity and transient excess
voltage.

74VHCT08A

QUAD 2-INPUT AND GATE

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE TUBE T & R

SOP 74VHCT08AM 74VHCT08AMTR

TSSOP 74VHCT08ATTR

TSSOPSOP

74VHCT08A

2/8

INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

TRUTH TABLE

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied

1) V

CC

= 0V

2) High or Low State

RECOMMENDED OPERATING CONDITIONS

1) V

CC

= 0V

2) High or Low State

3) VIN from 0.8V to 2V

PIN No SYMBOL NAME AND FUNCTION

1, 4, 9, 12 1A to 4A Data Inputs

2, 5, 10, 13 1B to 4B Data Inputs

3, 6, 8, 11 1Y to 4Y Data Outputs

7 GND Ground (0V)

14

V

CC

Positive Supply Voltage

ABY

LLL

LHL
HLL
HHH

Symbol Parameter Value Unit

V

CC

Supply Voltage

-0.5 to +7.0 V

V

I

DC Input Voltage

-0.5 to +7.0 V

V

O

DC Output Voltage (see note 1)

-0.5 to +7.0 V

V

O

DC Output Voltage (see note 2) -0.5 to VCC + 0.5

V

I

IK

DC Input Diode Current

- 20 mA

I

OK

DC Output Diode Current

± 20 mA

I

O

DC Output Current

± 25 mA

I

CC

or I

GND

DC VCC or Ground Current

± 50 mA

T

stg

Storage Temperature

-65 to +150 °C

T

L

Lead Temperature (10 sec)

300 °C

Symbol Parameter Value Unit

V

CC

Supply Voltage

4.5 to 5.5 V

V

I

Input Voltage

0 to 5.5 V

V

O

Output Voltage (see note 1)

0 to 5.5 V

V

O

Output Voltage (see note 2) 0 to V

CC

V

T

op

Operating Temperature

-55 to 125 °C

dt/dv

Input Rise and Fall Time (see note 3) (V

CC

= 5.0 ± 0.5V)

0 to 20 ns/V

74VHCT08A

3/8

DC SPECIFICATIONS

AC ELECTRICAL CHARACTERISTICS (Input t

r

= tf = 3ns)

(*) Vol tage range is 5. 0V ± 0.5V

CAPACITIVE CHARACTERISTICS

1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without

load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I

CC(opr)

= CPD x VCC x fIN + ICC/4 (per gate)

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

T

A

= 25°C

-40 to 85°C -55 to 125°C

Min. Typ. Max. Min. Max. Min. Max.

V

IH

High Level Input
Voltage

4.5 to

5.5

222V

V

IL

Low Level Input
Voltage

4.5 to

5.5

0.8 0.8 0.8 V

V

OH

High Level Output
Voltage

4.5

IO=-50 µA

4.4 4.5 4.4 4.4
V

4.5

I

O

=-8 mA

3.94 3.8 3.7

V

OL

Low Level Output
Voltage

4.5

IO=50 µA

0.0 0.1 0.1 0.1
V

4.5

I

O

=8 mA

0.36 0.44 0.55

I

I

Input Leakage
Current

0 to

5.5

V

I

= 5.5V or GND

± 0.1 ± 1.0 ± 1.0 µA

I

CC

Quiescent Supply
Current

5.5

V

I

= VCC or GND

22020µA



I

CC

Additional Worst
Case Supply
Current

5.5

One Input at 3.4V,
other input at V

CC

or GND

1.35 1.5 1.5 mA

I

OPD

Output Leakage
Current

0

V

OUT

= 5.5V

0.5 5.0 5.0 µA

Symbol Parameter

Test Condition Value

Unit

V

CC

(*)

(V)

C

L

(pF)

T

A

= 25°C

-40 to 85°C -55 to 125°C

Min. Typ. Max. Min. Max. Min. Max.

t

PLH

t

PHL

Propagation Delay
Time

5.0 15 5.0 6.9 1.0 8.0 1.0 8.0
ns

5.0 50 5.5 7.9 1.0 9.0 1.0 9.0

Symbol Parameter

Test Condition Value

Unit

T

A

= 25°C

-40 to 85°C -55 to 125°C

Min. Typ. Max. Min. Max. Min. Max.

C

IN

Input Capacitance

6101010pF

C

PD

Power Dissipation
Capacitance
(note 1)

18 pF