Document
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 VCC = 4.5V • 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)
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
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.
74HC126
Document number: DS35327 Rev. 3 - 2
1 of 9 www.diodes.com
January 2013
© Diodes Incorporated
Pin Descriptions
Pin Number
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Pin Name
1OE 1A 1Y 2OE 2A 2Y GND 3Y 3A 3OE 4Y 4A 4OE Vcc
Logic Diagram
Function
Data Enable Input (active low) Data Input Data Output
Data Enable Input (active low) Data Input Data Output Ground Data Output Data Input
Data Enable Input (active low) Data Outp Data Input
Data Enable Input (active low) Supply Voltage
74HC126
Function Table
Inputs OE H H L
A H L X
Output Y H L Z
74HC126
Document number: DS35327 Rev. 3 - 2
2 of 9 www.diodes.com
January 2013
© Diodes Incorporated
74HC126
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)
Symbol ESD HBM ESD CDM ESD MM
Description Human Body Model ESD Protection Charged Device Model ESD Protection Machine Model ESD Protection
Rating 2 1
200
Unit KV KV V
VCC VI IIK IOK IO ICC IGND TJ TSTG PTOT
Supply Voltage Range Input Voltage Range (Note 5) Input Clamp Current VI < -0.5V or Vi > VCC +0.5V Output Clamp Current VO < -0.5V or VO > VCC +0.5V Continuous Output Current -0.5V < VO VCC +0.5V Continuous Current Through VCC Continuous Current Through GND Operating Junction Temperature Storage Temperature Total Power Dissipation
-0.5 to +7.0 -0.5 to +7.0
±20 ±20 +/- 25 50 -50 -40 to +150 -65 to +150 500
V V mA mA mA mA mA °C °C mW
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 VCC to the extent the Maximum clamp current is exceeded.
Recommended Operating Conditions (Note 6) (@TA = +25°C, unless otherwise specified.)
Symbol VCC VI VO
Parameter Supply Voltage Input Voltage Output Voltage
Δt/ΔV Input Transition Rise or Fall Rate
TA Operating Free-Air Temperature Note: 6. Unused inputs should be held at VCC or ground.
Conditions
VCC = 2.0V VCC = 4.5V VCC = 6.0V
Min 2.0 0 0
-40
Max 6.0 VCC VCC 625 140 85 +125
Unit V V V
ns/V
°C
74HC126
Document number: DS35327 Rev. 3 - 2
3 of 9 www.diodes.com
January 2013
© Diodes Incorporated
74HC126
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
VIH High-level Input Voltage
Test Conditions
VIL Low-level input voltage
IOH = -20μA
IOH = -20μA
VOH High-level Output Voltage IOH = -20μA
IOH = -4.0mA
IOH = -5.2mA
IOL = 20μA
IOL = 20μA
VOL Low-level Output Voltage IOL = 20μA
IOL = 4mA
IOL = 5.2mA
IOZ
Z State Leakage Current
VO = 0 to 6.0V VI = GND or 6.0V
II Input Current
VI = GND to 5.5V
ICC Supply Current
VI = GND or VCC, IO=0
VCC
2.0V 4.5V 6.0V 2.0V 4.5V 6.0V 2.0V 4.5V 6.0V 4.5V 6.0V 2.0V 4.5V 6.0V 4.5V 6.0V
6.0V
6.0V 6.0V
TA = -40°C to +85°C Min Max 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.84 5.34 0.1 0.1 0.1 0.33 0.33
± 5.0
±1 20
TA = -40°C to +125°C Min Max 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.7 5.2 0.1 0.1 0.1 0.44 0.44
± 10
±1 40
Unit V V
V
V
μA μA μA
Switching Characteristics
Symbol Parameter
tPD
Propagation Delay AN to YN
Test Conditions
Figure 1 CL = 50pF
tEN
Enable Time OEN to YN
Figure 1 CL = 50pF
tDIS
Disable Time OEN to YN
Figure 1 CL = 50pF
tt
Transition Time
Figure 1 CL = 50pF
VCC
2.0V 4.5V 6.0V 2.0V 4.5V 6.0V 2.0V 4.5V 6.0V 2.0V 4.5V 6.0V
TA = +25°C Min Typ Max — 30 100 — 11 20 — 9 17 — 41 125 — 15 25 — 12 21 — 41 125 — 15 25 — 12 21 — 14 60 — 5 12 — 4 10
-40°C to +85°C
Max 125 25 21 155 31 26 155 31 26 75 15 13
-40°C to +125°C
Max 150 30 26 .