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 VCC = 4.5V
• CMOS low power consumption
• Schmitt Trigger Action at All Inputs
• ESD Protection Exceeds JESD 22
ƒ 200-V Machine Model (A115-A)
ƒ 2000-V Human Body Model (A114-A)
ƒ 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) 
Applications
• General Purpose Logic
• Wide array of products such as:
ƒ PCs, Networking, Notebooks, Netbooks
ƒ Computer Peripherals, Hard Drives, CD/DVD ROM
ƒ TV, DVD, DVR, Set Top Box
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
1 of 9
www.diodes.com
January 2013
© Diodes Incorporated
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Parameter Measurement Information
74HC125
TEST
tPLZ (see Notes D and E)
tPZL(see Notes D and F)
Condition
Vload
Vload
VCC
2.0V to 6.0V
Inputs
VI tr/tf
VCC ≤3ns
VM
VCC/2
VLOAD
2 X VCC
CL
15,50 pF
RL
2 KΩ
V∆
10% of VCC
Voltage Waveform
Pulse Duration
Voltage Waveform
Propagation Delay Times
Figure 1 Load Circuit and Voltage Waveforms
Notes:
A. Includes test lead and test apparatus capacitance.
B. All pulses are supplied at pulse repetition rate ≤ 1 MHz.
C. The inputs are measured one at a time with one transition per measurement.
D. For the 3 state device tPLZ and tPZL are the same as tPD.
E. tPZL is measured at VM.
D. tPLZ is measured at VOL +V∆.
74HC125
Document number: DS35326 Rev. 3 - 2
5 of 9
www.diodes.com
January 2013
© Diodes Incorporated

5 Page