DP8307A Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – DP8307A 8-Bit TRI-STATE-R Bidirectional Transceiver (Inverting)

February 1996
DP8307A 8-Bit TRI-STATE
Bidirectional Transceiver (Inverting)
General Description
The DP8307A is a high speed Schottky 8-bit TRI-STATE
bidirectional transceiver designed to provide bidirectional
drive for bus oriented microprocessor and digital communi-
cations systems It is capable of sinking 16 mA on the A
ports and 48 mA on the B ports (bus ports) PNP inputs for
low input current and an increased output high (V_OH) level
allow compatibility with MOS CMOS and other technolo-
gies that have a higher threshold and less drive capabilities
In addition it features glitch-free power up down on the B
port preventing erroneous glitches on the system bus in
power up or down
DP8303A and DP7304B DP8304B are featured with Trans-
mit Receive (T R) and Chip Disable (CD) inputs to simplify
control logic For greater design flexibility DP8307A and
DP7308 DP8308 is featured with Transmit (T) and
Receive (R) control inputs
Features
Y _{8-bit bidirectional data flow reduces system package}
count
Y _{Bidirectional TRI-STATE inputs outputs interface with}
bus oriented systems
Y _{PNP inputs reduce input loading}
Y _{Output high votlage interfaces with TTL MOS and}
CMOS
Y _{48 mA 300 pF bus drive capability}
Y _{Pinouts simplify system interconnections}
Y _{Independent T and R controls for versatility}
Y _{Compact 20-pin dual-in-line package}
Y _{Bus port glitch free power up down}
Logic and Connection Diagrams
Dual-In-Line Package
TL F 8794 – 1
Logic Table
Control Inputs
Resulting Conditions
Transmit Receive
A Port
B Port
1
0
OUT
IN
0
1
IN
OUT
1
1
TRI-STATE TRI-STATE
0
0
Both Active
This is not an intended logic condition and may cause oscillations
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1996 National Semiconductor Corporation TL F 8794
Top View
Order Number DP8307AN
See NS Package Number N20A
TL F 8794 – 2
RRD-B30M36 Printed in U S A
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