OCTAL BUS TRANSCEIVERS
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...
Description
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...
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