DP8308 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – 8-Bit TRI-STATE Bidirectional Transceiver (Non-Inverting)

February 1996
DP8308 8-Bit TRI-STATE
Bidirectional Transceiver (Non-Inverting)
General Description
The DP8308 is a high speed Schottky 8-bit TRI-STATE bidi-
rectional transceiver designed to provide bidirectional drive
for bus oriented microprocessor and digital communications
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 com-
patibility with MOS CMOS and other technologies that
have a higher threshold and less drive capabilities In addi-
tion it features glitch-free power up down on the B port
preventing erroneous glitches on the system bus in power
up or down
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 voltage 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 8795 – 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
Top View
Order Number DP8308N
See NS Package Number N20A
TL F 8795 – 2
TRI-STATE is a registered trademark of National Semiconductor Corp
C1996 National Semiconductor Corporation TL F 8795
RRD-B30M36 Printed in U S A
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