74AHCT126 QUADRUPLE 3-STATE BUFFERS OE HIGH Description Pin Assignments The 74AHCT126 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 4.5V to 5.5V. Features • Wide Supply Voltage Range from 4.5V to 5.5V • Inputs Are TTL Voltage Level Compatible • Outputs Sink or Source 8mA at VCC = 4.5V • CMOS Low Power Consumption • Schmitt Trigger Action at All Inputs • ESD Protection Exceeds JESD 22 (cid:1) 200-V Machine Model (A115) (cid:1) 2000-V Human Body Model (A114) Applications (cid:1) Exceeds 1000-V Charged Device Model (C101) • General Purpose Logic • Latch-Up Exceeds 250mA per JESD 78, Class II • Wide Array of Products Such as: • Range of Package Options SO-14 and TSSOP-14 (cid:1) PCs, Networking, Notebooks, Netbooks • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) (cid:1) Computer Peripherals, Hard Drives, CD/DVD ROMs • Halogen and Antimony Free. “Green” Device (Note 3) (cid:1) TVs, DVDs, DVRs, Set Top Boxes 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. 74AHCT126 1 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 Ordering Information 7” Tape and Reel Part Number Package Code Packaging Quantity Part Number Suffix 74AHCT126S14-13 S14 SO-14 2,500/Tape & Reel -13 74AHCT126T14-13 T14 TSSOP-14 2,500/Tape & Reel -13 Pin Descriptions Logic Diagram Pin Pin Name Function Number 1 1OE Data Enable Input (active high) 2 1A Data Input 3 1Y Data Output 4 2OE Data Enable Input (active high) 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 high) 11 4Y Data Output 12 4A Data Input 13 4OE Data Enable Input (active high) 14 VCC Supply Voltage Function Table Inputs Output OE A Y H H H H L L L X Z 74AHCT126 2 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 Absolute Maximum Ratings (Note 4) (TA = +25°C, unless otherwise specified.) 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 Supply Voltage Range -0.5 to +7.0 V VI Input Voltage Range -0.5 to +7.0 V IIK Input Clamp Current VI < -0.5V -20 mA IOK Output Clamp Current VO < 0 V -20 mA IOK Output Clamp Current VO > VCC 20 mA IO Continuous Output Current 0V < VO < VCC +/- 25 mA ICC Continuous Current Through VCC 50 mA IGND Continuous Current Through GND -50 mA TJ Operating Junction Temperature -40 to +150 °C TSTG Storage Temperature -65 to +150 °C PTOT Total Power Dissipation 500 mW Note: 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. Recommended Operating Conditions (Note 5) (TA = +25°C, unless otherwise specified.) Symbol Parameter Min Max Unit VCC Supply Voltage 4.5 5.5 V VI Input Voltage 0 5.5 V VO Output Voltage 0 VCC V ∆t/∆V Input transition Rise or Fall Rate - 20 ns/V TA Operating Free-Air Temperature -40 +125 °C Note: 5. Unused inputs should be held at VCC or Ground. 74AHCT126 3 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 Electrical Characteristics TA = -40°C to +85°C TA = -40°C to +125°C Symbol Parameter Test Conditions Vcc Unit Min Max Min Max High-Level Input VIH Voltage - 4.5V to 5.5V 2.0 - 2.0 - V Low-Level Input VIL Voltage - 4.5V to 5.5V - 0.8 - 0.8 V High-Level Output IOH = -50µA 4.5V 4.4 - 4.4 - VOH Voltage IOH = -8mA 4.5V 3.80 - 3.70 - V Low-Level Output IOL = 50µA 4.5V - 0.1 - 0.1 VOL Voltage IOL = 8mA 4.5V - 0.44 - 0.55 V Z State IOZ Leakage Current VO = 0 to 5.5V 5.5V - ±2.5 - ±10 µA II Input Current VI = GND to 5.5V 3.6V - ±1 - ±2 µA ICC Supply Current VI = GND or VCC, IO = 0 3.6V - 20 - 40 µA ∆ICC ACdudrrietinotn al Supply OOnthee irn ppiunts aat tV VCCCC –o2r. 1GVN D 5.5V - 1.35 - 5 mA Operating Characteristics Test VCC = 5.5V Parameter Unit Conditions Typ Power Dissipation Cpd Capacitance per Gate f = 1MHz 14.8 pF Ci Input Capacitance Vi = GVNCCD – or 4.0 pF Switching Characteristics (VCC = 4.5V to 5.5V) TA = +25°C -40°C to +85°C -40°C to +125°C Symbol Parameter Test Conditions Unit Min Typ Max Min Max Min Max Figure 1 CL = 15pF 0.5 3.0 5.5 0.5 6.5 0.5 7.0 tPD Propagation Delay AN to YN ns Figure 1 CL = 50pF 0.5 4.3 7.5 0.5 8.5 0.5 9.5 tEN Enable Time OEN to YN Figure 1 CL = 15 pF 0.5 3.3 5.1 0.5 6.0 0.5 6.5 ns Figure 1 CL = 50pF 0.5 4.7 7.1 0.5 8.0 0.5 9.0 tDIS Disable Time OEN to YN Figure 1 CL = 15pF 0.5 4.8 6.8 0.5 8.0 0.5 8.5 ns Figure 1 CL = 50pF 0.5 6.5 8.9 0.5 10.0 0.5 11.5 74AHCT126 4 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 Parameter Measurement Information TEST S1 tPLH/tPHL Open tPLZ/tPZL Vload tPHZ/tPZH GND Vcc VI Inputs tr/tf InVpuMt s OuVtpMu ts VLOAD CL RL V∆ 4.5V to 5.5V 3 V ≤3ns 1.5 V VCC/2 VCC 15pF, 50pF 1K 0.3V V l Output Control VM VM 0 V Voltage Waveform Pulse Duration Output t t Waveform 1 PZL PLZ VLOAD/2 S1 at V V LOAD M (see Note B) VOL + V VOL Output tPZH tPHZ Waveform 2 VOH - V VOH S1 at GND VM (see Note B) 0V Voltage Waveform Enable and Disable Times Low and High Level Enabling Voltage Waveform Propagation Delay Times Inverting and Non Inverting Outputs 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. Inputs are measured separately one transition per measurement. D. tPLZ and tPHZ are the same as tdis. E. tPZL and tPZH are the same as tEN0 F. tPLH and tPHL are the same as tPD. 74AHCT126 5 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 Marking Information (1) SO-14, TSSOP-14 ((TToopp VViieeww )) 1144 88 YYYY ::YYeeaarr ::0088,,0099,,1100~~ LLooggoo WWWW ::WWeeeekk ::0011~~5522;;5522 PPaarrtt NNuummbbeerr 74AHCT126 rreepprreesseennttss 5522 aanndd 5533 wweeeekk YYYY WWWWXX XX XX : Internal Codes 11 77 Part Number Package 74AHCT126S14 SO-14 74AHCT126T14 TSSOP-14 74AHCT126 6 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. Package Type: SO-14 SO-14 Dim Min Max E H Gauge Plane A 1.47 1.73 A1 0.10 0.25 L θ A2 1.45 Typ B 0.33 0.51 Detail “A” D 8.53 8.74 E 3.80 3.99 7°(4x) D A2 A He 5.810. 27 Ty6p. 20 L 0.38 1.27 θθθθ 0° 8° B e Detail “A” All Dimensions in mm A1 Package Type: TSSOP-14 TSSOP-14 Dim Min Max 25 a1 7° (4X) Pin# 1 Indent B L 0. GSeaautgineg P Plalannee aA2 40.°9 58.1°0 F1 a2 B 4.30 4.50 F C  1.2 Detail ‘A’ D 0.8 1.05 F 1.00 Typ F1 0.45 0.75 G K G 0.65 Typ A K 0.19 0.30 a1 D L 6.40 Typ All Dimensions in mm C Detail ‘A’ 74AHCT126 7 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. Package Type: SO-14 X Dimensions Value (in mm) X 0.60 Y 1.50 C1 5.4 C1 C2 1.27 C2 Y Package Type: TSSOP-14 X Dimensions Value (in mm) X 0.45 Y 1.45 C1 C1 5.9 C2 C2 0.65 Y 74AHCT126 8 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

74AHCT126 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2015, Diodes Incorporated www.diodes.com 74AHCT126 9 of 9 April 2015 Document number: DS35356 Rev. 3 - 2 www.diodes.com © Diodes Incorporated

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: D iodes Incorporated: 74AHCT126S14-13 74AHCT126T14-13