SNJ54AC245J

D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7 ns at 5 V description/ordering information The ’AC245 octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. When the output-enable (OE) is low, the device passes noninverted data 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. A high on OE disables the device so that the buses are effectively isolated. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. SN54AC245, SN74AC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCAS461F − FEBRUARY 1995 − REVISED OCTOBER 2003 SN54AC245 . . . J OR W PACKAGE SN74AC245 . . . DB, DW, N, NS, OR PW PACKAGE (TOP VIEW) DIR 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GND 10 20 VCC 19 OE 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 B8 SN54AC245 . . . FK PACKAGE (TOP VIEW) OE VCC DIR A1 A2 3 2 1 20 19 A3 4 18 B1 A4 5 17 B2 A5 6 16 B3 A6 7 15 B4 A7 8 14 B5 9 10 11 12 13 B6 B7 B8 GND A8 ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING PDIP − N Tube SN74AC245N SN74AC245N SOIC − DW Tube Tape and reel SN74AC245DW SN74AC245DWR AC245 −40°C to 85°C SOP − NS SSOP − DB Ta...