DESCRIPTION The 74VHCT238A is an advanced high-speed CMOS 3 TO 8 LINE DECODER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. ■ HIGH SPEED: tPD = 8 ns (TYP.) at VCC = 5V ■ LOW POWER DISSIPATION: ICC =4 µA (MAX.) at TA = 25 oC ■ COMPATIBLEWITH TTL OUTPUTS: VIH = 2V (MIN), VIL = 0.8V(MAX) ■ POWERDOWN PROTECTIONON INPUTS & OUTPUTS ■ SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) ■ BALANCEDPROPAGATIONDELAYS: tPLH ≅ tPHL ■ OPERATING VOLTAGERANGE: VCC (OPR)= 4.5V to 5.5V ■ PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 238 ■ IMPROVED LATCH-UP IMMUNITY
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