Diodes 74HC126 User Manual

74HC126

QUADRUPLE 3-STATE BUFFERS OE HIGH

Description

The 74HC126 provides provides four independent buffer gates with

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

with a low 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.

= 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

74HC126

Document number: DS35327 Rev. 3 - 2

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January 2013

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 Vcc Supply Voltage

Pin Name Function

Logic Diagram

74HC126

Function Table

Inputs Output

OE A Y

H H H

H L L

L X Z

74HC126

Document number: DS35327 Rev. 3 - 2

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January 2013

74HC126

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 5) -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

74HC126

Document number: DS35327 Rev. 3 - 2

3 of 9

www.diodes.com

January 2013