TC74AC138F

The TC74AC138F is one member of the TC74AC138 series.The TC74AC138 is an advanced high speed CMOS 3-to-8 line decoder fabricated with silicon gate and double-layer metal wiring C2MOS technology.It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.When the device is enabled, 3 Binary Select inputs(A, B and C)determine which one of the outputs (YO-Y7) will go low.When enable input Gl is held low or either G2A or G2B is held high, decoding function is inhibited and all outputs go high.

Features of the TC74AC138F are:(1)high speed:tpd=5.9ns(typ.) at Vcc=5V;(2)low power dissipation:Icc=8A(Max.) at Ta=25;(3)symmetrical output impedance:|IOH|=Iol=24mA(Min.) capability of driving 50 tansmission lines;(4)balanced propagation delays:tpLHtPHL;(6)wide operating voltage range:Vcc (opr)=2V~5.5V;(7)pin and function compatible with 74F02;(8)high noise immunity:Vnih=Vnil=28% Vcc(Min).All inputs are equipped with protection circuits against static discharge or transient excess voltage.

The absolute maximum ratings of the TC74AC138F can be summarized as:(1)supply voltage range:-0.5 to 7.0V;(2)DC input voltage:-0.5 to Vcc+0.5V;(3)DC output voltage:-0.5 to Vcc+0.5V;(4)input diode current:±20mA; (5)output diode current:±50mA;(6)DC output current:±50mA;(7)DC Vcc/ground current:±200mA;(8)power dissipation:500mW;(9)storage temperature:-65 to 150.TOSHIBA is continually working to improve the quality and the reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products of the TC74AC138F are used within specified operating ranges as set forth in the most recent products specifications.Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook.