器件名称:
M74HC243RM13TR
功能描述:
QUAD BUS TRANSCEIVER (3 - STATE)
文件大小:
171.47KB 共11页
简 介:
M74HC243 QUAD BUS TRANSCEIVER (3 - STATE) s s s s s s s HIGH SPEED: tPD = 11ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4A(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 6mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 243 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC243B1R M74HC243M1R T&R M74HC243RM13TR M74HC243TTR DESCRIPTION The M74HC243 is an high speed CMOS QUAD BUS TRANSCEIVER (3-STATE) fabricated with silicon gate C2MOS technology. The M74HC243 is a 3-state bidirectional non-inverting buffer and is intended for two way asynchronous communication between data buses. It has high drive current outputs which enable high speed operation when driving large bus capacitance. The device has one active high enable (GBA), and one active low enable (GAB) All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/11 M74HC243 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2, 12 3, 4, 5, 6 11, 10, 9, 8 13 7 14 SYMBOL GAB NC 1A to 4A 1B to 4B GBA GND VCC NAME AND FUNCTION Output Enable Input (Active LOW) Not Connected Data Inputs/Outputs Data Inputs/Outputs Output Enable Input Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS GAB H L H L GBA H L L H FUNCTION OUTPUTS A BUS B B……
