器件名称:
M74HCT240RM13TR
功能描述:
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED)
文件大小:
198.99KB 共9页
简 介:
M74HCT240 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED) s s s s s s HIGH SPEED: tPD = 15 ns (TYP.) at VCC = 4.5V LOW POWER DISSIPATION: ICC = 4A(MAX.) at TA=25°C COMPATIBLE WITH TTL OUTPUTS : VIH = 2V (MIN.) VIL = 0.8V (MAX) BALANCED PROPAGATION DELAYS: tPLH tPHL SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 6mA (MIN) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 240 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HCT240B1R M74HCT240M1R T&R M74HCT240RM13TR M74HCT240TTR DESCRIPTION The 74HCT240 is an advanced high-speed CMOS OCTAL BUS BUFFER (3-STATE) fabricated with silicon gate C2MOS technology. G control input governs four BUS BUFFERs. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/9 M74HCT240 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2, 4, 6, 8 9, 7, 5, 3 11, 13, 15, 17 18, 16, 14, 12 19 10 20 SYMBOL 1G 1A1 to 1A4 2Y1 to 2Y4 2A1 to 2A4 1Y1 to 1Y4 2G GND VCC NAME AND FUNCTION Output Enable Input Data Inputs Data Outputs Data Inputs Data Outputs Output Enable Input Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS G L L H X : Don’t Care Z : High Impedance OUTPUT An L H X Yn H L Z ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± ……
