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SN74LVC138A-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74LVC138A-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page SN74LVC138AQ1 3LINE TO 8LINE DECODER/DEMULTIPLEXER SCAS708A − SEPTEMBER 2003 − REVISED MAY 2004 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Qualification in Accordance With AEC-Q100† D Qualified for Automotive Applications D Customer-Specific Configuration Control Can Be Supported Along With Major-Change Approval D ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) D Operates From 2 V to 3.6 V D Inputs Accept Voltages to 5.5 V D Max tpd of 5.8 ns at 3.3 V D Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C † Contact factory for details. Q100 qualification data available on request. D Typical VOHV (Output VOH Undershoot) >2 V at VCC = 3.3 V, TA = 25°C description/ordering information The SN74LVC138A 3-line to 8-line decoder/demultiplexer is designed for 2.7-V to 3.6-V VCC operation. The device is designed for high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, this decoder minimizes the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, delay times of this decoder and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoder is negligible. The conditions at the binary-select inputs and the three enable inputs select one of eight output lines. Two active-low enable inputs and one active-high enable input reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters, and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment. ORDERING INFORMATION TA PACKAGE‡ ORDERABLE PART NUMBER TOP-SIDE MARKING −40 °C to 125°C SOIC − D Reel of 2500 SN74LVC138AQDRQ1 L138AQ1 −40 °C to 125°C TSSOP − PW Reel of 2000 SN74LVC138AQPWRQ1 L138AQ1 ‡ Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2004, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 A B C G2A G2B G1 Y7 GND VCC Y0 Y1 Y2 Y3 Y4 Y5 Y6 D OR PW PACKAGE (TOP VIEW) |
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