Fairchild 74LVX125 service manual

H =

74LVX125 — Low Voltage Quad Buffer with 3-STATE Outputs

February 2008

74LVX125
Low Voltage Quad Buffer with 3-STATE Outputs

Features

■

Input voltage level translation from 5V to 3V
Ideal for low power/low noise 3.3V applications

■

■

Guaranteed simultaneous switching noise level and
dynamic threshold performance

General Description

The LVX125 contains four independent non-inverting
buffers with 3-STATE outputs. The inputs tolerate volt­ages up to 7V allowing the interface of 5V systems to 3V
systems.

Ordering Information

Order

Number

74LVX125M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
74LVX125SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVX125MTC MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.

All packages are lead free per JEDEC: J-STD-020B standard.

Connection Diagram

Package

Number Package Description

Logic Symbol

IEEE/IEC

Pin Description

Pin Names Description

A

n

OE

n

O

n

©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com
74LVX125 Rev. 1.4.0

Inputs
Output Enable Inputs
Outputs

Truth Table

Inputs Output

OE

n

LLL
LHH

HXZ

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

A

n

O

n

=

=

=

∆

∆

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.

Symbol Parameter Rating

V

CC

I

IK

V

I

OK

V

I

O

I

or I

CC

T

STG

PPower Dissipation 180mW

Supply Voltage –0.5V to +7.0V
DC Input Diode Current, V
DC Input Voltage –0.5V to 7V

I

–0.5V –20mA

I

DC Output Diode Current

–0.5V –20mA

V

O

V

V

O

DC Output Voltage –0.5V to V

O

+ 0.5V +20mA

CC

DC Output Source or Sink Current ±25mA

GND

DC V

or Ground Current ±50mA

CC

Storage Temperature –65°C to +150°C

CC

+ 0.5V

74LVX125 — Low Voltage Quad Buffer with 3-STATE Outputs

Recommended Operating Conditions

(1)

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.

Symbol Parameter Rating

V

CC

V

V

O

T

A

t

/

Note:

1. Unused inputs must be held HIGH or LOW. They may not float.

Supply Voltage 2.0V to 3.6V
Input Voltage 0V to 5.5V

I

Output Voltage 0V to V
Operating Temperature –40°C to +85°C

V Input Rise and Fall Time 0ns/V to 100ns/V

CC

©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com
74LVX125 Rev. 1.4.0 2

DC Electrical Characteristics

Symbol Parameter V

V

V

V

V

I

I

I

OH

OL

OZ

IN

CC

HIGH Level Input

IH

Voltage

LOW Level Input

IL

Voltage

HIGH Level Output
Voltage

LOW Level Output
Voltage

3-STATE Output
Off-State Current

Input Leakage
Current

Quiescent Supply
Current

CC

2.0 1.5 1.5 V

3.0 2.0 2.0

3.6 2.4 2.4

2.0 0.5 0.5 V

3.0 0.8 0.8

3.6 0.8 0.8

2.0 V

3.0 V

2.0 V

3.0 V

3.6 V

3.6

3.6 V

Conditions

V

IN

I

–50µA

OH

V

IN

I

–50µA

OH

V

V

IN

I

–4mA

OH

V

IN

I

50µA

OL

V

IN

I

50µA

OL

V

V

IN

I

4mA

OL

V

IN

V

OUT

V

5.5V or GND

IN

V

IN

=

=

=

=

=

=

=

=

=

=

=

=

=

=

=

T

–40°C to

A

+85°C

IL

IL

IL

IL

IL

IL

IL

V

or V

or V

or V

or V

or V

or V

or V

or GND

CC

T

+25°C

A

,

IH

,

IH

,

IH

,

IH

,

IH

,

IH

,

IH

1.9 2.0 1.9 V

2.9 3.0 2.9

2.58 2.48

0.0 0.1 0.1 V

0.0 0.1 0.1

0.36 0.44

±0.25 ±2.5 µA

±0.1 ±1.0 µA

or GND 4.0 40.0 µA

CC

=

=

=

=

=

=

74LVX125 — Low Voltage Quad Buffer with 3-STATE Outputs

UnitsMin. Typ. Max. Min. Max.

Noise Characteristics

Symbol Parameter V

V

V
V

V

OLP

OLV

IHD

ILD

Quiet Output Maximum Dynamic V
Quiet Output Minimum Dynamic V
Minimum HIGH Level Dynamic Input Voltage 3.3 50 2.0 V
Maximum LOW Level Dynamic Input Voltage 3.3 50 0.8 V

(2)

OL

OL

T

25°C

A

(V) C

CC

(pF)

L

3.3 50 0.3 0.8 V

3.3 50 –0.3 –0.8 V

UnitsTyp. Limit

Note:

2. Input t

©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com
74LVX125 Rev. 1.4.0 3

t

3ns

r

f