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M74HC238B1R Folha de dados(PDF) 1 Page - STMicroelectronics |
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M74HC238B1R Folha de dados(HTML) 1 Page - STMicroelectronics |
1 / 10 page 1/10 July 2001 s HIGH SPEED: tPD = 15ns (TYP.) at VCC = 6V s LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C s HIGH NOISE IMMUNITY: VNIH = VNIL = 28 % VCC (MIN.) s SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) s BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL s WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 238 DESCRIPTION The M74HC238 is an high speed CMOS 3 TO 8 LINE DECODER fabricated with silicon gate C2MOS technology. If the device is enabled, 3 binary select inputs (A, B and C) determine which one of outputs will go high. When enable input G1 is held "Low" or either G2A or G2B is held "High" decoding function is inhibited and all the 8 outputs go low. Three enable inputs are provided to ease cascade connection and application of this address decoder in memory systems. All inputs are equipped with protection circuits against static discharge and transient excess voltage. M74HC238 3 TO 8 LINE DECODER PIN CONNECTION AND IEC LOGIC SYMBOLS ORDER CODES PACKAGE TUBE T & R DIP M74HC238B1R SOP M74HC238M1R M74HC238RM13TR TSSOP M74HC238TTR TSSOP DIP SOP |
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