SGS Thomson Microelectronics 74LVX273TTR, 74LVX273MTR, 74LVX273M Datasheet

1/10July 2001

■ HIGH SPEED:

f

MAX

= 150 MHz (TYP.) at VCC = 3.3V

■ 5V TOLERANT INPUTS

■ POWER-DOWN PROTECTION ON INPUTS

■ INPUT VOLTAGE LEVEL:

V

IL

= 0.8V, VIH = 2V at VCC =3V

■ LOW POWER DISSIPATION:

I

CC

= 4 µA (MAX.) at TA=25°C

■ LOW NOISE:

V

OLP

= 0.3V (TYP.) at VCC =3.3V

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

OH

| = IOL = 4 mA (MIN) at VCC =3V

■ BALANCED PROPAGATION DELAYS:

t

PLH

≅ t

PHL

■ OPERATING VOLT AG E R ANGE:

V

CC

(OPR) = 2V to 3.6V (1.2V Data Retention)

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 273

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74LVX273 is a low voltage CMOS OCTAL
D-TYPE FLIP-FLOP WITH CLEAR fabricated with
sub-micron silicon gate and double-layer metal
wiring C

2

MOS technology. It is ideal for low
power, battery operated and low noise 3.3V
applications.
Information signals applied to D inputs are

transferred to the Q o utputs on the positive going
edge of the clock pulse.
When the CLE AR

input is held low, the Q outputs
are held low independently of the other inputs.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage.
This device can be used to interface 5V to 3V. It
combines high speed performance with the true
CMOS low power consumption.
All inputs and outputs are equipped with
protection circuits against stat ic discharge, giving
them 2KV ESD immunity and transient excess
voltage.

74LVX273

LOW VOLTAGE CMOS OCTAL D-TYPE FLIP-FLOP

WITH CLEAR (5V TOLERANT INPUTS)

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE TUBE T & R

SOP 74LVX273M 74LVX273MTR

TSSOP 74LVX273TTR

TSSOPSOP

74LVX273

2/10

INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

TRUTH TABLE

X : Don’t Care

LOGIC DIAGRAM

This log i c diagram has not be used to esti m ate propagation delays

PIN No SYMBOL NAME AND FUNCTION

1 CLEAR

Asynchronous Master
Reset (Active LOW)

2, 5, 6, 9, 12,

15, 16,19

Q0 to Q7 Flip-Flop Outputs

3, 4, 7, 8, 13,

14, 17, 18

D0 to D7 Data Inputs

1 1 CLOCK Clock Input (LOW-to-HIGH

Edge Triggered)
10 GND Ground (0V)
20 V

CC

Positive Supply Voltage

INPUTS OUTPUT

FUNCTION

CLEAR

DBQ

L X X L CLEAR

HL L
HH H
HX

Q

n

NO CHANGE

74LVX273

3/10

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

RECOMMENDED OPERATING CONDITIONS

1) Truth T abl e guarante ed: 1.2V to 3.6 V

2) V

IN

from 0.8V to 2.0V

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 -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 (note 1)

2 to 3.6 V

V

I

Input Voltage

0 to 5.5 V

V

O

Output Voltage 0 to V

CC

V

T

op

Operating Temperature

-55 to 125 °C

dt/dv

Input Rise and Fall Time (note 2) (V

CC

= 3V)

0 to 100 ns/V