器件名称: 8002101SA
功能描述: OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
文件大小: 513.86KB 共15页
简 介:SN54LS245, SN74LS245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SDLS146A – OCTOBER 1976 – REVISED FEBRUARY 2002
D D D D
3-State Outputs Drive Bus Lines Directly PNP Inputs Reduce dc Loading on Bus Lines Hysteresis at Bus Inputs Improves Noise Margins Typical Propagation Delay Times Port to Port, 8 ns
IOL (SINK CURRENT) 12 mA 24 mA IOH (SOURCE CURRENT) –12 mA –15 mA
SN54LS245 . . . J OR W PACKAGE SN74LS245 . . . DB, DW, N, OR NS PACKAGE (TOP VIEW)
TYPE SN54LS245 SN74LS245
DIR A1 A2 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 OE B1 B2 B3 B4 B5 B6 B7 B8
description
These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can disable the device so that the buses are effectively isolated.
SN54LS245 . . . FK PACKAGE (TOP VIEW)
A2 A1 DIR VCC OE A3 A4 A5 A6 A7
4 5 6 7 8 3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
B1 B2 B3 B4 B5
ORDERING INFORMATION
TA PDIP – N 0°C to 70°C SOIC – DW SOP – NS SSOP – DB CDIP – J –55°C to 125°C CFP – W PACKAGE Tube Tube Tape and reel Tape and reel Tape and reel Tube Tube Tube ORDERABLE PART NUMBER SN74LS245N SN74LS245DW SN74LS245DWR SN74LS245NSR SN74LS245DBR SN54LS245J SNJ54LS245J SNJ54LS245W 74LS245 LS24……
