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National Semiconductor Electronic Components Datasheet

DP8226 Datasheet

4-Bit Bidirectional Bus Transceivers

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DP8226 pdf
June 1990
DP8216 DP8216M DP8226 DP8226M
4-Bit Bidirectional Bus Transceivers
General Description
The DP8216 DP8216M and DP8226 DP8226M are 4-bit bi-
directional bus drivers to use in bus oriented applications
The non-inverting DP8216 DP8216M and inverting
DP8226 DP8226M drivers are provided for flexibility in sys-
tem design
Each buffered line of the four-bit drivers consists of two
separate buffers that are TRI-STATE to achieve direct bus
interface and bidirectional capability On one side of the
driver the output of one buffer and the input of another are
tied together (DB) this side is used to interface to the sys-
tem side components such as memories I O etc because
its interface is TTL compatible and it has high driver (50
mA) On the other side of the driver the inputs and outputs
are separated to provide maximum flexibility Of course
they can be tied together so that the driver can be used to
buffer a true bidirectional bus The DO outputs on this side
of the driver have a special high voltage output drive capa-
bility so that direct interface to the 8080 type CPUs is
achieved with an adequate amount of noise immunity
The CS input is a device enable When it is ‘‘high’’ the out-
put drivers are all forced to their high-impedance state
When it is a ‘‘low’’ the device is enabled and the direction of
the data flow is determined by the DIEN input
The DIEN input controls the direction of data flow which is
accomplished by forcing one of the pair of buffers into its
high-impedance state and allowing the other to transmit its
data A simple two-gate circuit is used for this function
Features
Y Data bus buffer driver to 8080 type CPUs
Y Low input load current 0 25 mA maximum
Y High output drive capability for driving system data
bus 50 mA at 0 5V
Y Power up-down protection
Y DP8216 DP8216M have non-inverting outputs
Y DP8226 DP8226M have inverting outputs
Y Output high voltage compatible with direct interface to
MOS
Y TRI-STATE outputs
Y Advanced Schottky processing
Y Available in military and commercial temperature
Logic Diagrams
DP8216 DP8216M
DP8226 DP8226M
TL F 8753 – 1
TRI-STATE is a registered trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation TL F 8753
TL F 8753 – 2
RRD-B30M105 Printed in U S A


National Semiconductor Electronic Components Datasheet

DP8226 Datasheet

4-Bit Bidirectional Bus Transceivers

No Preview Available !

DP8226 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
Min Max Units
All Output and Supply Voltages
b0 5 a7 0 V
All Input Voltages
b1 0 a5 5 V
Output Currents
125 mA
Maximum Power Dissipation at 25 C
Cavity Package
Molded Package
1509 mW
1476 mW
Note Derate cavity package 10 1 mW C above 25 C derate molded
package 11 8 mW C above 25 C
Min Max Units
Storage Temperature
b65 a150 C
Lead Temperature (soldering 4 seconds)
260 C
Operating Conditions
Min
Supply Voltage VCC
DP8216M DP8226M
DP8216 DP8226
45
4 75
Temperature TA
DP8216M DP8226M
DP8216 DP8226
b55
0
Max
55
5 25
a125
a70
Units
V
V
C
C
Electrical Characteristics DP8216 DP8226 VCC e 5V g5% (Notes 2 3 and 4)
Symbol
Parameter
Conditions
Limits
Min Typ
DRIVERS
VIL
VIH
IF
IR
VC
VOL1
VOL2
Input Low Voltage
Input High Voltage
Input Load Current
Input Leakage Current
Input Clamp Voltage
Output Low Voltage
Output Low Voltage
VOH
Output High Voltage
ISC Output Short Circuit Current
l lIO Output Leakage Current TRI-STATE
RECEIVERS
VF e 0 45V
VR e 5 25V
IC e b5 mA
IOL e 25 mA
DP8216 IOL e 55 mA
DP8226 IOL e 50 mA
IOH e b10 mA
VCC e 5V
VO e 0 45V 5 5V
2
24
b30
b0 03
03
05
30
b75
VIL Input Low Voltage
VIH Input High Voltage
IF Input Load Current
VC Input Clamp Voltage
VOL Output Low Voltage
VOH1
Output High Voltage
ISC Output Short Circuit Current
l lIO Output Leakage Current TRI-STATE
CONTROL INPUTS (CS DIEN)
VF e 0 45V
IC e b5 mA
IOL e 15 mA
IOH e b1 mA
VCC e 5V
VO e 0 45V 5 5V
2
b0 08
3 65
b15
03
40
b35
VIL Input Low Voltage
VIH Input High Voltage
IF Input Load Current
IR Input Leakage Current
ICC Power Supply Current
DP8216
DP8226
VF e 0 45V
VR e 5 25V
2
b0 15
95
85
Max
0 95
b0 25
10
b1 2
0 45
06
b120
100
0 95
b0 25
b1 2
0 45
b65
20
0 95
b0 5
20
130
120
Units
V
V
mA
mA
V
V
V
V
mA
mA
V
V
mA
V
V
V
mA
mA
V
V
mA
mA
mA
mA
2


Part Number DP8226
Description 4-Bit Bidirectional Bus Transceivers
Maker National
Total Page 6 Pages
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