器件名称:
M74HC7245F1R
功能描述:
OCTAL BUS TRANSCEIVER (3-STATE):HC7645 NONINVERTING HC7640 INVERTING ,HC7643 INVERTING/NONINVERTING
文件大小:
257.51KB 共10页
简 介:
M54HC7245/7640/7643/7645 M74HC7245/7640/7643/7645 OCTAL BUS TRANSCEIVER (3-STATE): HC7645 NON INVERTING HC7640 INVERTING , HC7643 INVERTING/NON INVERTING . . . . . . . . HIGH SPEED tPD = 12 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 A (MAX.) at TA = 25 C HIGH NOISE IMMUNITY VH = 1.1 (TYP.) at VCC = 5V OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL = 6 mA (MIN) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING RANGE VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 54/74LS245/640/643 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCXXXXF1R M74HCXXXXM1R M74HCXXXXB1R M74HCXXXXC1R DESCRIPTION The M54/74HC7245 HC7640, HC7643 and HC7645 utilise silicon gate C2MOS technology to achive operating speeds equivalent to LSTTL devices. Along with the low power dissipation and high noise 2 immunity of standads C MOS integrated circuit, it possesses the capability to drive 15 LSTTL loads. These IC’s are intended for two-way asynchronous communication between data buses, and the direction of data trasmission is determined by DIR input. The enable input (G) can be used to disable the device so that the buses are effectively isolated. The HC7245/640/7643/7645 have the same pin PIN CONNECTION (top view) HC7640 HC7643 HC7645/HC7245 configuration and function as the HC245/640/643 and they have a hysteresis characteristics with each input, so HC7245/7640/7643/7645 can be used as a lin……
