HIT HD74LV125A Datasheet

HD74LV125A

Quad. Bus Buffer Gates with 3-state Outputs

ADE-205-245 (Z)

1st Edition

March 1999

Description

The HD74LV125A features independent line drivers with three state outputs. Each output is disabled when
the associated output enable (OE) input is high. To ensure the high impedance state during power up or
power down, OE should be connected to VCC through a pull-down resistor; the minimum value of the
resistor is determined by the current souring capability of the driver. Low-voltage and high-speed operation
is suitable for the battery-powered products (e.g., notebook computers), and the low-power consumption
extends the battery life.

Features

• VCC = 2.0 V to 5.5 V operation

• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)

• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)

• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)

• Typical VOH undershoot > 2.3 V (@VCC = 3.3 V, Ta = 25°C)

• Output current ±8 mA (@VCC = 3.0 V to 3.6 V), ±16 mA (@VCC = 4.5 V to 5.5 V)

Function Table

Inputs
OE A Output Y

LHH
LLL
HXZ

Note: H: High level

L: Low level
X: Immaterial
Z: High impedance

HD74LV125A

Pin Arrangement

1OE

V

1

14

CC

1A
1Y

2OE

2A
2Y

GND

2
3
4
5

6
7

(Top view)

13
12
11
10

4OE
4A
4Y
3OE

9

3A

8

3Y

2

HD74LV125A

Absolute Maximum Ratings

Item Symbol Ratings Unit Conditions

Supply voltage range V
Input voltage range*
Output voltage range*

1

1, 2

Input clamp current I
Output clamp current I
Continuous output current I
Continuous current through

V

or GND

CC

Maximum power dissipation
at Ta = 25°C (in still air)*

3

CC

V

I

V

O

IK

OK

O

or I

I

CC

GND

P

T

Storage temperature Tstg –65 to 150 °C
Notes: The absolute maximum ratings are values which must not individually be exceeded, and furthermore,

no two of which may be realized at the same time.

1. The input and output voltage ratings may be exceeded if the input and output clamp-current
ratings are observed.

2. This value is limited to 5.5 V maximum.

3. The maximum package power dissipation was calculated using a junction temperature of 150°C.

–0.5 to 7.0 V
–0.5 to 7.0 V
–0.5 to VCC + 0.5 V Output: H or L
–0.5 to 7.0 VCC: OFF or Output: Z
–20 mA VI < 0

±50 mA VO < 0 or VO > V
±35 mA VO = 0 to V

CC

CC

±70 mA

785 mW SOP

500 TSSOP

3

HD74LV125A

Recommended Operating Conditions

Item Symbol Min Max Unit Conditions

Supply voltage range V
Input voltage range V
Output voltage range V

Output current I

CC

I

O

OH

I

OL

Input transition rise or fall rate ∆t /∆v 0 200 ns/V VCC = 2.3 to 2.7 V

Operating free-air temperature Ta –40 85 °C
Note: Unused or floating inputs must be held high or low.

2.0 5.5 V
0 5.5 V
0VCCV H or L
0 5.5 High impedance state
— –50 µAV
—–2 mAV
—–8 V

= 2.0 V

CC

= 2.3 to 2.7 V

CC

= 3.0 to 3.6 V

CC

— –16 VCC = 4.5 to 5.5 V
—50 µAV

= 2.0 V

CC

— 2 mA VCC = 2.3 to 2.7 V
—8 V
—16 V

= 3.0 to 3.6 V

CC

= 4.5 to 5.5 V

CC

0 100 VCC = 3.0 to 3.6 V
020 V

= 4.5 to 5.5 V

CC

4

Logic Diagram

1OE
1A

2OE
2A

3OE
3A

4OE

HD74LV125A

1

2

4

5

10

9

13

12

3

1Y

6

2Y

8

3Y

11

4Y4A

5