Diodes 74HC125 User Manual

74HC125

QUADRUPLE 3-STATE BUFFERS OE LOW

Description

The 74HC125 provides provides four independent buffer gates with

3-state outputs. Each buffer has a separate enable pin that if driven

with a high logic level places the corresponding output in the high

impedance state. The device is designed for operation with a power

supply range of 2.0V to 6.0V.

Pin Assignments

Features

• Wide Supply Voltage Range from 2.0V to 6.0V

• Sinks or sources 4mA at V

• CMOS low power consumption

• Schmitt Trigger Action at All Inputs

• ESD Protection Exceeds JESD 22

 200-V Machine Model (A115-A)

 2000-V Human Body Model (A114-A)

 Exceeds 1000-V Charged Device Model (C101C)

• Range of Package Options SO-14 and TSSOP-14

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

74HC125

Document number: DS35326 Rev. 3 - 2

= 4.5V

CC

Applications

• General Purpose Logic

• Wide array of products such as:

 PCs, Networking, Notebooks, Netbooks

 Computer Peripherals, Hard Drives, CD/DVD ROM

 TV, DVD, DVR, Set Top Box

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Pin Descriptions

Number

1 1OE Data Enable Input (active low)

2 1A Data Input

3 1Y Data Output

4 2OE Data Enable Input (active low)

5 2A Data Input

6 2Y Data Output

7 GND Ground

8 3Y Data Output

9 3A Data Input

10 3OE Data Enable Input (active low)

11 4Y Data Outp

12 4A Data Input

13 4OE Data Enable Input (active low)

14

Pin Name Function

V

CC

Supply Voltage

Logic Diagram

74HC125

Function Table

Inputs Output

OE

L H H

L L L

H X Z

A Y

74HC125

Document number: DS35326 Rev. 3 - 2

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January 2013

74HC125

Absolute Maximum Ratings (Note 4) (@T

Symbol Description Rating Unit

ESD HBM Human Body Model ESD Protection 2 KV

ESD CDM Charged Device Model ESD Protection 1 KV

ESD MM Machine Model ESD Protection 200 V

VCC

VI

Supply Voltage Range -0.5 to +7.0 V

Input Voltage Range note 3) -0.5 to +7.0 V

IIK Input Clamp Current VI < -0.5V or Vi > VCC +0.5V

IOK Output Clamp Current VO < -0.5V or VO > VCC +0.5V

IO Continuous Output Current -0.5V < V

ICC Continuous Current Through VCC

I

GND

TJ

T

STG

P

TOT

Notes: 4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be within recommend values.

5. Input Voltage cannot exceed V

Continuous Current Through GND -50 mA

Operating Junction Temperature -40 to +150 °C

Storage Temperature -65 to +150 °C

Total Power Dissipation 500 mW

to the extent the Maximum clamp current is exceeded.

CC

Recommended Operating Conditions (Note 6) (@T

Symbol Parameter Conditions Min Max Unit

VCC

VI

VO

Δt/ΔV Input Transition Rise or Fall Rate

TA

Note: 6. Unused inputs should be held at VCC or Ground.

Supply Voltage

Input Voltage 0

Output Voltage 0

Operating Free-Air Temperature

= +25°C, unless otherwise specified.)

A

+0.5V

O VCC

= +25°C, unless otherwise specified.)

A

= 2.0V

V

CC

VCC = 4.5V

VCC = 6.0V

2.0 6.0 V

625

140

85

-40 +125 °C

±20 mA

+/- 25 mA

50 mA

VCC

V

ns/V

74HC125

Document number: DS35326 Rev. 3 - 2

3 of 9

www.diodes.com

January 2013