器件名称:
MC74AC244DW
功能描述:
OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
文件大小:
164.38KB 共6页
简 介:
MC74AC244 MC74ACT244 Octal Buffer/Line Driver with 3State Outputs The MC74AC244/74ACT244 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter/ receiver which provides improved PC board density. 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers Outputs Source/Sink 24 mA ′ACT244 Has TTL Compatible Inputs OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS VCC 20 OE2 19 18 17 16 15 14 13 12 11 N SUFFIX CASE 738-03 PLASTIC 1 OE1 2 3 4 5 6 7 8 9 10 GND DW SUFFIX CASE 751D-04 PLASTIC TRUTH TABLE Inputs OE1 L L H D L H X Outputs (Pins 12, 14, 16, 18) L H Z TRUTH TABLE Inputs OE2 L L H D L H X Outputs (Pins 3, 5, 7, 9) L H Z H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance FACT DATA 5-1 MC74AC244 MC74ACT244 MAXIMUM RATINGS* Symbol VCC Vin Vout Iin Iout ICC Tstg Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Sink/Source Current, per Pin DC VCC or GND Current per Output Pin Storage Temperature Value –0.5 to +7.0 –0.5 to VCC +0.5 –0.5 to VCC +0.5 ±20 ±50 ±50 –65 to +150 Unit V V V mA mA mA °C * Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. RECO……
