器件名称:
MC74HCT245A_07
功能描述:
Octal 3State Noninverting Bus Transceiver with LSTTL Compatible Inputs
文件大小:
118.34KB 共9页
简 介:
MC74HCT245A Octal 3State Noninverting Bus Transceiver with LSTTL Compatible Inputs HighPerformance SiliconGate CMOS The MC74HCT245A is identical in pinout to the LS245. This device may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. The MC74HCT245A is a 3state noninverting transceiver that is used for 2way asynchronous communication between data buses. The device has an activelow Output Enable pin, which is used to place the I/O ports into highimpedance states. The Direction control determines whether data flows from A to B or from B to A. Features http://onsemi.com PDIP20 N SUFFIX CASE 738 1 Output Drive Capability: 15 LSTTL Loads TTL/NMOS Compatible Input Levels Outputs Directly Interface to CMOS, NMOS and TTL Operating Voltage Range: 4.5 V to 5.5 V Low Input Current: 1.0 mA In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 304 FETs or 76 Equivalent Gates PbFree Packages are Available A1 A2 A DATA PORT A3 A4 A5 A6 A7 A8 DIRECTION 2 3 4 5 6 7 8 9 1 19 18 17 16 15 14 13 12 11 B1 B2 B3 B4 B5 B6 B7 B8 B DATA PORT SOIC20W DW SUFFIX CASE 751D 1 TSSOP20 DT SUFFIX CASE 948E 1 SOEIAJ20 F SUFFIX CASE 967 1 PIN ASSIGNMENT DIRECTION A1 A2 Units ea ns mW pJ A3 A4 A5 A6 A7 A8 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC OUTPUT ENABLE B1 B2 B3 B4 B5 B6 B7 B8 OUTPUT ENABLE PIN 20 = VCC PIN 10 = GND Figure 1. Logic Diagram Design Criteria Internal Gate Count* Internal Gate Propaga……
