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National Semiconductor Electronic Components Datasheet

DP8308 Datasheet

8-Bit TRI-STATE Bidirectional Transceiver

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DP8308 pdf
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 (VOH) 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
00
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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National Semiconductor Electronic Components Datasheet

DP8308 Datasheet

8-Bit TRI-STATE Bidirectional Transceiver

No Preview Available !

DP8308 pdf
Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
5 5V
Output Voltage
5 5V
Storage Temperature
b65 C to a150 C
Maximum Power Dissipation at 25 C
Cavity Package
Molded Package
1667 mW
1832 mW
Lead Temperature (soldering 4 sec )
260 C
Derate cavity package 11 1 mW C above 25 C derate molded package
14 7 mW C above 25 C
DC Electrical Characteristics (Notes 2 and 3)
Recommended Operating
Conditions
Min Max
Supply Voltage (VCC)
DP7308
45
55
DP8308
4 75 5 25
Temperature (TA)
DP7308
b55
a125
DP8308
0 a70
Units
V
V
C
C
Symbol
Parameter
Conditions
Min Typ Max Units
A PORT (A0 – A7)
VIH Logical ‘‘1’’ Input Voltage T e VIL R e 2 0V
VIL Logical ‘‘0’’ Input Voltage T e VIL R e 2 0V
DP8308
DP7308
20
V
08 V
07 V
VOH
VOL
IOS
IIH
II
Logical ‘‘1’’ Output Voltage
Logical ‘‘0’’ Output Voltage
Output Short Circuit
Current
Logical ‘‘1’’ Input Current
Input Current at Maximum
Input Voltage
T e 2 0V R e VIL
IOH e b0 4 mA
IOH e b 3 mA
T e 2 0V
R e VIL
IOL e 16 mA (8308)
IOL e 8 mA (both)
T e 2 0V R e VIL VO e 0V
VCC e Max (Note 4)
T e VIL R e 2 0V VIH e 2 7V
R e T e 2 0V VCC e Max VIH e 5 25V
VCCb1 15
27
b10
VCCb0 7
3 95
0 35
03
b38
01
05
04
b75
80
1
V
V
V
V
mA
mA
mA
IIL
VCLAMP
IOD
Logical ‘‘0’’ Input Current
Input Clamp Voltage
Output Input
TRI-STATE Current
B PORT (B0 – B7)
T e VIL R e 2 0V VIN e 0 4V
T e R e 2 0V IIN e b12 mA
T e R e 2 0V
VIN e 0 4V
VIN e 4 0V
b70
b0 7
b200
b1 5
b200
80
mA
V
mA
mA
VIH Logical ‘‘1’’ Input Voltage T e 2 0V R e VIL
VIL Logical ‘‘0’’ Input Voltage T e 2 0V R e VIL
DP8308
DP7308
20
V
08 V
07 V
VOH
VOL
IOS
IIH
II
Logical ‘‘1’’ Output Voltage
Logical ‘‘0’’ Output Voltage
Output Short Circuit
Current
Logical ‘‘1’’ Input Current
Input Current at Maximum
Input Voltage
T e VIL R e 2 0V
IOH e b0 4 mA
IOH e b5 mA
IOH e b10 mA
T e VIL R e 2 0V
IOL e 20 mA
IOL e 48 mA
T e VIL R e 2 0V VO e 0V
VCC e Max (Note 4)
T e 2 0V R e VIL VIH e 2 7V
T e R e 2 0V VCC e Max VIH e 5 25V
VCCb1 15 VCCb0 8
27 39
24 36
03
04
04
05
V
V
V
V
V
b25
b50 b150 mA
0 1 80 mA
1 mA
IIL
VCLAMP
IOD
Logical ‘‘0’’ Input Current
Input Clamp Voltage
Output Input
TRI-STATE Current
T e 2 0V R e VIL VIN e 0 4V
T e R e 2 0V IIN e b12 mA
T e R e 2 0V
VIN e 0 4V
VIN e 4 0V
b70
b0 7
b200
b1 5
b200
a200
mA
V
mA
mA
http www national com
2


Part Number DP8308
Description 8-Bit TRI-STATE Bidirectional Transceiver
Maker National
Total Page 6 Pages
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