Datasheet 74LCX08 Datasheet (ST)

Low voltage CMOS QUAD 2-input AND gate

Features

■ 5V tolerant inputs

■ High speed:

–t

= 4.1ns (Max) at V

PD

■ Power down protection on inputs and outputs

■ Symmetrical output impedance:

–|I

■ PCI bus levels guaranteed at 24mA

■ Balanced propagation delays:

–t

■

Operating voltage range:
–V

■ Pin and function compatible with

| = IOL = 24mA (Min) at VCC = 3V

OH

≅ t

PLH

PHL

(Opr) = 2.0V to 3.6V

CC

74 series 08

■ Latch-up performance exceeds

500mA (JESD 17)

■ ESD performance:

– HBM > 2000V

(MIL STD 883 method 3015); MM > 200V

CC

= 3V

74LCX08

with 5V tolerant inputs

SO-14 TSSOP14

Description

The 74LCX08 is a low voltage CMOS QUAD 2­input AND gate fabricated with sub-micron silicon
gate and double-layer metal wiring C
technology. It is ideal for low power and high
speed 3.3V applications; it can be interfaced to
5V signal environment for inputs.

It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.

All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.

2

MOS

Order codes

Part number Package Packaging

74LCX08MTR SO-14 Tape and reel

74LCX08TTR TSSOP14 Tape and reel

July 2006 Rev 5 1/15

www.st.com

15

Contents 74LCX08

Contents

1 Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2/15

74LCX08 Logic symbols and I/O equivalent circuit

1 Logic symbols and I/O equivalent circuit

Figure 1. IEC logic symbols

Figure 2. Input and output equivalent circuit

3/15

Pin settings 74LCX08

2 Pin settings

2.1 Pin connection

Figure 3. Pin connection (top through view)

2.2 Pin description

Table 1. Pin description

Pin N° 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

2.3 Truth table

Table 2. Truth table

ABY

LLL

LHL

HLL

HHH

CC

Inputs Output

Positive supply voltage

4/15

74LCX08 Maximum rating

3 Maximum rating

stressing the device above the rating listed in the “absolute maximum ratings” table may
cause permanent damage to the device. these are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. exposure to absolute maximum rating conditions for
extended periods may affect device reliability. refer also to the STMicroelectronics sure
program and other relevant quality documents.

Table 3. Absolute maximum ratings

Symbol Parameter Value Unit

V

I

I

I

GND

T

1. IO absolute maximum rating must be observed

2. VO < GND

Supply voltage -0.5 to +7.0 V

CC

V

DC input voltage -0.5 to +7.0 V

I

DC output voltage (VCC = 0V)

V

O

V

DC output voltage (high or low state)

O

I

DC input diode current -50 mA

IK

DC output diode current

OK

I

DC output current ± 50 mA

O

DC supply current per supply pin ± 100 mA

CC

(2)

(1)

-0.5 to +7.0 V

-0.5 to VCC + 0.5

-50 mA

DC ground current per supply pin ± 100 mA

Storage temperature -65 to +150 °C

stg

T

Lead temperature (10 sec) 300 °C

L

V

3.1 Recommended operating conditions

Table 4. Recommended operating conditions

Symbol Parameter Value Unit

V

V

V

V

Supply voltage

CC

Input voltage 0 to 5.5 V

I

Output voltage (VCC = 0V)

O

Output voltage (high or low state)

O

IOH, IOLHigh or low level output current (VCC = 3.0 to 3.6V)

I

, IOLHigh or low level output current (VCC = 2.7V)

OH

T

dt/dv

1. Truth table guaranteed: 1.5V to 3.6V

2. VIN from 0.8V to 2V at VCC = 3.0V

Operating temperature -40 to 85 °C

op

Input rise and fall time

(1)

(2)

5/15

2.0 to 3.6 V

0 to 5.5 V

0 to V

CC

± 24 mA

± 12 mA

0 to 10 ns/V

V

Electrical characteristics 74LCX08

4 Electrical characteristics

Table 5. DC specifications

Test condition Value

Symbol Parameter

V

CC

(V)

-40 to 85°C

Min Max

Unit

V

IH

High level input
voltage

2.0 V

2.7 to 3.6

V

IL

V

OH

V

OL

I

I

off

I

CC

∆I

CC

Low level input
voltage

High level output
voltage

Low level output
voltage

Input leakage current 2.7 to 3.6

I

Power OFF leakage
current

Quiescent supply
current

I incr. per Input 2.7 to 3.6

2.7 to 3.6

2.7

3.0

2.7 to 3.6

2.7

3.0

0

2.7 to 3.6

=-100 µAVCC-0.2

I

O

=-12 mA

I

O

I

=-18 mA

O

I

=-24 mA

O

I

=100 µA

O

=12 mA

I

O

I

=16 mA

O

I

=24 mA

O

= 0 to 5.5V

V

I

VI or VO = 5.5V

VI = VCC or GND

V

or VO= 3.6 to 5.5V

I

= VCC - 0.6V

V

IH

0.8 V

2.2
V

2.4

2.2

0.2

0.4
V

0.4

0.55

± 5 µA

10 µA

10

µA

± 10

500 µA

Table 6. Dynamic switching characteristics

Symbol Parameter

V

OLP

V

OLV

1. Number of outputs defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to
HIGH. The remaining output is measured in the LOW state.

Dynamic low level quiet

(1)

output

6/15

V

Test condition Value

CC

(V)

= 50pF

C

3.3

L

VIL = 0V, VIH = 3.3V

TA = 25 °C

Min Typ Max

0.8

-0.8

Unit

V

74LCX08 Electrical characteristics

Table 7. AC electrical characteristics

Test condition Value

Symbol Parameter

V

CC

(V)

t

PLH tPHL

t

OSLH

t

OSHL

1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
outputs of the same device switching in the same direction, either HIGH or LOW (t
t

OSHL

2. Parameter guaranteed by design

Propagation delay
time

Output to output
skew time

= | t

PHLm

- t

PHLn

(1) (2)

|)

2.7

3.0 to 3.6 1.0 4.1

3.0 to 3.6 50 500 2.5 1.0 ns

C

(pF)

L

R
(Ω)

L

t

s

(ns)

50 500 2.5

= t

r

OSLH

-40 to 85 °C

Min Max

4.8

= | t

PLHm

- t

PLHn

Unit

ns

|,

Table 8. Capacitive characteristics

Test condition Value

= 25 °C

Symbol Parameter

V

CC

(V)

C

C

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

Input capacitance 3.3

IN

Power dissipation

PD

capacitance

(1)

3.3

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

CC(opr)

= 0 to V

V

IN

= 10MHz

f

IN

VIN = 0 or V

CC

CC

T

A

Min Typ Max

6pF

3.8 pF

Unit

7/15

Test circuit 74LCX08

5 Test circuit

Figure 4. Test circuit

= 50pF or equivalent (includes jig and probe capacitance)

C

L

R

= 500Ω or equivalent

L

= Z

R

T

of pulse generator (typically 50Ω)

OUT

6 Waveforms

Figure 5. Waveform - propagation delay (f = 1MHz; 50% duty cycle)

8/15

74LCX08 Package mechanical data

7 Package mechanical data

In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com

9/15

Package mechanical data 74LCX08

SO-14 MECHANICAL DATA

DIM.

A 1.35 1.75 0.053 0.069

A1 0.1 0.25 0.004 0.010

A2 1.10 1.65 0. 043 0.065

B 0.33 0.51 0.013 0.020

C 0.19 0.25 0. 007 0.010

D 8.55 8.75 0. 337 0.344

E 3.8 4.0 0.150 0.157

e 1.27 0.050

H 5.8 6.2 0.228 0.244

h 0 .25 0.50 0.010 0.020

L 0.4 1.27 0.016 0.050

k0° 8°0° 8°

ddd 0.100 0.004

MIN. TYP MAX. MIN. TYP. MAX.

mm. inch

10/15

0016019D

74LCX08 Package mechanical data

TSSOP14 MECHANICAL DATA

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 1.2 0.047

A1 0.05 0.15 0.002 0.004 0.006

A2 0.8 1 1.05 0.031 0.039 0.041

b 0.19 0.30 0.007 0.012

c 0.09 0.20 0.004 0.0089

D 4.9 5 5.1 0.193 0.197 0.201

E 6.2 6.4 6.6 0.244 0.252 0.260

E1 4.3 4.4 4.48 0.169 0.173 0.176

e 0.65 BSC 0.0256 BSC

K0˚ 8˚0˚ 8˚

L 0.45 0.60 0.75 0.018 0.024 0.030

mm. inch

A2

A

PIN 1 IDENTIFICATION

A1

b

e

c

K

L

E

D

E1

1

0080337D

11/15

Package mechanical data 74LCX08

Tape & Reel SO-14 MECHANICAL DATA

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 330 12.992

C 12.8 13.2 0.504 0.519

D 20.2 0.795

N 60 2.362

T 22.4 0.882

Ao 6.4 6.6 0.252 0.260

Bo 9 9.2 0.354 0.362

Ko 2.1 2.3 0.082 0.090

Po 3.9 4.1 0.153 0.161

P 7.9 8.1 0.311 0.319

mm. inch

12/15

74LCX08 Package mechanical data

Tape & Reel TSSOP14 MECHANICAL DATA

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 330 12.992

C 12.8 13.2 0.504 0.519

D 20.2 0.795

N 60 2.362

T 22.4 0.882

Ao 6.7 6.9 0.264 0.272

Bo 5.3 5.5 0.209 0.217

Ko 1.6 1.8 0.063 0.071

Po 3.9 4.1 0.153 0.161

P 7.9 8.1 0.311 0.319

mm. inch

13/15

Revision history 74LCX08

8 Revision history

Table 9. Revision history

Date Revision Changes

15-Sep-2004 4 Ordering codes revision - pag. 1.

10-Jul-2006 5 New template, temperature ranges updated

14/15

74LCX08

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