ST 74LVC373A User Manual

■ 5V TOLERANTINPUTS

■ HIGH SPEED:t

■ POWER DOWN PROTECTION ON INPUTS

= 6.8ns (MAX.) atVCC=3V

PD

AND OUTPUTS

■ SYMMETRICAL OUTPUT IMPEDANCE:

|IOH|=IOL= 24mA (MIN) at VCC=3V

■ PCI BUS LEVELS GUARANTEED AT24 mA

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

PHL

■ OPERATING VOLTAGE RANGE:

VCC(OPR) = 1.65V to 3.6V (1.2V Data
Retention)

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 373

■ LATCH-UP PERFORMANCE EXCEEDS

500mA (JESD 17)

■ ESD PERFORMANCE:

HBM > 2000V (MIL STD 883 method 3015);
MM > 200V

DESCRIPTION

The 74LVC373A is a low voltage CMOS OCTAL
D-TYPE LATCH fabricated with sub-micron silicon
gate and double-layer metal wiring C2MOS
technology. It is ideal for 1.65 to 3.6 V

CC

operations and low power and low noise
applications.

These 8 bit D-Type latch are controlled by a latch
enable input(LE) and an output enable input (OE).
While the LE inputs is held at a high level, the Q

PIN CONNECTION AND IEC LOGIC SYMBOLS

74LVC373A

OCTAL D-TYPE LATCH

HIGH PERFORMANCE

TSSOPSOP

ORDER CODES

PACKAGE TUBE T & R

SOP 74LVC373AM 74LVC373AMTR

TSSOP 74LVC373ATTR

outputs will follow the data input precisely or
inversely. When the LE is taken low,the Q outputs
will be latched precisely or inversely at the logic
level of D input data. While the (OE) input is low,
the 8outputs will be in a normal logic state (high or
low logic level) and while highlevel the outputs will
be in a high impedance state.
This device is designed to interface directly High
Speed CMOS systems with TTL and NMOS
components.
It has more speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.
All inputs are equipped with protection circuits
against static discharge, giving them 2KV ESD
immunity and transient excess voltage.

1/10February 2002

74LVC373A

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION TRUTH TABLE

PIN No SYMBOL NAME AND FUNCTION

1 OE Asynchronous Master

Reset (Active LOW)

2, 5,6, 9, 12,

Q0 to Q7 3-State Outputs

15, 16,19

3, 4,7, 8, 13,

D0 to D7 Data Inputs

14, 17, 18

11 LE Latch Enable Input
10 GND Ground (0V)
20 V

CC

Positive Supply Voltage

OE LE D Q

HXXZ

LLX
LHLL

LHHH

X : Don’t Care
Z :High Impedance

INPUTS OUTPUT

NO

CHANGE

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V
V
V

I

I

OK

I

or I

I

CC

T

T

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

absolute maximum rating must be observed

1) I

O

< GND

2) V

O

Supply Voltage

CC

DC Input Voltage

I

DC Output Voltage (VCC= 0V)

O

DC Output Voltage (High or Low State) (note 1) -0.5 to VCC+ 0.5

O

DC Input Diode Current

IK

DC Output Diode Current (note 2)
DC Output Current

O

DC VCCor Ground Current per Supply Pin

GND

Storage Temperature

stg

Lead Temperature (10 sec)

L

-0.5 to +7.0 V

-0.5 to +7.0 V

-0.5 to +7.0 V
V

-50 mA

-50 mA

± 50 mA

± 100 mA

-65 to +150 °C

300 °C

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74LVC373A

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V
V
V

I

OH,IOL

I

OH,IOL

I

OH,IOL

I

OH,IOL

T

dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V

1) Truth Table guaranteed: 1.2V to 3.6V
from 0.8V to 2V at VCC= 3.0V

2) V

IN

DC SPECIFICATIONS

Supply Voltage (note 1)

CC

Input Voltage

I

Output Voltage (VCC= 0V)

O

Output Voltage (High or Low State) 0 to V

O

High or Low Level Output Current (VCC= 3.0 to 3.6V)
High or Low Level Output Current (VCC= 2.7 to 3.0V)
High or Low Level Output Current (VCC= 2.3 to 2.7V)
High or Low Level Output Current (VCC= 1.65 to 2.3V)
Operating Temperature

op

Test Condition Value

1.65 to 3.6 V
0 to 5.5 V
0 to 5.5 V

CC

± 24 mA
± 12 mA

± 8mA
± 4mA

-55 to 125 °C

V

Symbol Parameter

V

V

V

V

I

off

I

OZ

High Level Input

IH

Voltage

Low Level Input

IL

Voltage

High Level Output

OH

Voltage

Low Level Output

OL

Voltage

Input Leakage

I

I

Current
Power Off Leakage

Current
High Impedance

Output Leakage
Current

Quiescent Supply
Current

ICCincr. per Input

CC

∆I

I

CC

V

CC

(V)

1.65 to 1.95

-40 to 85 °C -55 to 125 °C

Min. Max. Min. Max.

0.65V

CC

0.65V

CC

2.3 to 2.7 1.7 1.7

2.7 to 3.6 2 2

1.65 to 1.95

0.35V

CC

0.35V

2.3 to 2.7 0.7 0.7

2.7 to 3.6 0.8 0.8
I

1.65 to 3.6

1.65

2.3

2.7

3.0

3.0

1.65 to 3.6

1.65

2.3

2.7

3.0

3.6

0

3.6 VI=VIHorV

=-100 µAVCC-0.2 VCC-0.2

O

I

=-4 mA

O

I

=-8 mA

O

=-12 mA

I

O

=-18 mA

I

O

=-24 mA

I

O

IO=100 µA

I

=4 mA

O

=8 mA

I

O

=12 mA

I

O

=24 mA

I

O

V

= 0 to 5.5V

I

V

or VO= 5.5V

I

IL

1.2 1.2

1.7 1.7

2.2 2.2

2.4 2.4

2.2 2.2

0.2 0.2

0.45 0.45

0.7 0.7

0.4 0.4

0.55 0.55
± 5 ± 5 µA

10 10 µA

± 10 ± 10 µA

VO= 0 to 5.5V

3.6

2.7 to 3.6

VI=VCCor GND

or VO= 3.6 to

V

I

5.5V

VIH=VCC-0.6V

10 10

± 10 ± 10

500 500 µA

Unit

V

CC

V

V

V

µA

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