Fairchild Semiconductor 74LCX760 Datasheet

July 2001
Revised February 2002

74LCX760
Low Voltage Buffer/Line Driver

with 5V Tolerant Inputs and Open Drain Outputs

74LCX760 Low Voltage Buffer/Line Driver with 5V Tolerant Inputs and Open Drain Outputs

General Description

The LCX760 is the Open Drain version of the LCX244. The
LCX760 contains eight non-in verting buffers with 3 -STATE
outputs. The device may be employed as a memory
address driver, clock driver and bus-ori ented transmitter/
receiver. The LCX760 is desig ned for lo w voltage (2.5V or

3.3V) V
signal environment.
The LCX760 is fabrica ted with an advanced CMOS tech-

nology to achieve high s peed operation while maintaining
CMOS low power dissipation.

applications with capability of interfacing to a 5V

CC

Features

■ Open drai n version of the LCX244

■ 5V tolerant inputs and outputs

■ 2.3V–3.6V V

■ 8.0 ns t

■ Power down high impedance inputs and outputs

■ Supports live insertion/withdrawal (Note 1)

■ 24 mA output drive (V

■ Implements patented noise/EMI reduction circuitry

■ Latch-up conforms to JEDEC JED78

■ ESD performance:

Human body model
Machine model

Note 1: To ensure the high-impedance state during power up or down, OE
should be tied to VCC through a pull-up res istor: the m inimu m value or t he

resistor is determin ed by the current-sourc ing capability of the driver.

specifications provided

CC

max (VCC = 3.3V), 10 µA ICC max

PD

= 3.0V)

CC

> 2000V

> 200V

Ordering Code:

Order Number Package Number Package Description

74LCX760WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
74LCX760SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 4.4mm Wide
74LCX760MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74LCX760MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Devices also availab l e in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering code.

Logic Symbol

IEEE/IEC

Connection Diagram

© 2002 Fairchild Semiconductor Corporation DS500413 www.fairchildsemi.com

Pin Descriptions

74LCX760

Truth Tables

H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance

Pin Names Description

OE
I

0–I7

O

1

0–O7

, OE

2

3-STATE Output Enable Inputs
Inputs
Outputs

Inputs Outputs

OE

1

I

n

(Pins 12, 14, 16, 18)

LL L
LH H
HX Z

Inputs Outputs

OE

2

I

n

(Pins 3, 5, 7, 9)

LL L
LH H
HX Z

www.fairchildsemi.com 2

Absolute Maximum Ratings(Note 2)

Symbol Parameter Value Conditions Units

V
V
V
I

IK

I

OK

I

O

I

CC

I

GND

T

CC
I
O

STG

Supply Voltage −0.5 to +7.0 V
DC Input Voltage −0.5 to +7.0 V
DC Output Voltage −0.5 to +7.0 Output in HIGH or LOW Stat e (Note 3) V
DC Input Diode Current −50 VI < GND mA
DC Output Diode Current −50 VO < GND

+50 V

O

> V

CC

DC Output Sink Current 50 mA
DC Supply Current per Supply Pin ±100 mA
DC Ground Current per Ground Pin ±100 mA
Storage Temperature −65 to +150 °C

Recommended Operating Conditions (Note 4)

Symbol Parameter Min Max Units

V

CC

V

I

V

O

I

OL

T

A

∆t/∆V Input Edge Rate, V

Note 2: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated
at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recom-
mended Operating Conditions” table will define the conditions fo r ac t ual device operation.

Note 3: I
Note 4: Unused inputs or I/Os mus t be held HIGH or LOW. They ma y n ot flo at .

Supply Voltage Operating 2.0 3.6

Data Retention 1.5 3.6
Input Voltage 0 5.5 V
Output Voltage 0 5.5 V
Output Current VCC = 3.0V − 3.6V 24

= 2.7V − 3.0V 12

CC

= 2.3V − 2.7V 8

V

CC

Free-Air Operating Temperature −40 85 °C

= 0.8V–2.0V, VCC = 3.0V 0 10 ns/V

IN

Absolute Maximum Rating must be observed.

O

V

mAV

74LCX760

mA

DC Electrical Characteristics

Symbol Parameter Conditions

V

IH

V

IL

V

OL

I

I

I

OZ

I

OFF

I

CC

∆I

CC

I

OHZ

Note 5: Outputs disabled or 3-STATE only.

HIGH Level Input Voltage 2.3 − 2.7 1.7

LOW Level Input Voltage 2.3 − 2.7 0.7

LOW Level Output Voltage IOL = 100 µA2.3 − 3.6 0.2

IOL = 8 mA 2.3 0.6
IOL = 12 mA 2.7 0.4
IOL = 16 mA 3.0 0.4

Input Leakage Current 0 ≤ VI ≤ 5.5V 2.3 − 3.6 ±5.0 µA
3-STATE Output Leakage 0 ≤ VO ≤ 5.5V

Power-Off Leakage Current VI or VO = 5.5V 0 10 µA
Quiescent Supply Current VI = VCC or GND 2.3 − 3.6 10

Increase in ICC per Input VIH = VCC −0.6V 2.3 − 3.6 500 µA
Off State Current VO = 5.5 2 - 3.6 10 µA

IOL = 24 mA 3.0 0.55

VI = VIH or V

3.6V ≤ VI, VO ≤ 5.5V (Note 5) 2.3 − 3.6 ±10

IL

3 www.fairchildsemi.com

TA = −40°C to +85°C

V

CC

(V) Min Max

2.7 − 3.6 2.0

2.7 − 3.6 0.8

2.3 − 3.6 ±5.0 µA

Units

V

V

V

µA