NSC DP8216N, DP8216MJ-883 Datasheet

TL/F/8753

DP8216/DP8216M/DP8226/DP8226M 4-Bit Bidirectional Bus Transceivers

June 1990

DP8216/DP8216M/DP8226/DP8226M
4-Bit Bidirectional Bus Transceivers

General Description

The DP8216/DP8216M and DP8226/DP8226M are 4-bit bi­directional bus drivers to use in bus oriented applications.
The non-inverting DP8216/DP8216M and inverting
DP8226/DP8226M drivers are provided for flexibility in sys­tem design.

Each buffered line of the four-bit drivers consists of two
separate buffers that are TRI-STATE

É

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 sys­tem 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 capa­bility 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 out­put 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 currentÐ0.25 mA maximum

Y

High output drive capability for driving system data
busÐ50 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

TL/F/8753– 1

DP8226/DP8226M

TL/F/8753– 2

TRI-STATEÉis a registered trademark of National Semiconductor Corp.

C

1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.

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

b

0.5a7.0 V

All Input Voltages

b

1.0a5.5 V

Output Currents 125 mA

Maximum Power Dissipation* at 25§C

Cavity Package 1509 mW
Molded Package 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

b65a

150§C

Lead Temperature (soldering, 4 seconds) 260§C

Operating Conditions

Min Max Units

Supply Voltage, V

CC

DP8216M, DP8226M 4.5 5.5 V
DP8216, DP8226 4.75 5.25 V

Temperature, T

A

DP8216M, DP8226M

b

55

a

125

§

C

DP8216, DP8226 0

a

70

§

C

Electrical Characteristics DP8216, DP8226 V

CC

e

5Vg5% (Notes 2, 3, and 4)

Symbol Parameter Conditions

Limits

Units

Min Typ Max

DRIVERS

V

IL

Input Low Voltage 0.95 V

V

IH

Input High Voltage 2 V

I

F

Input Load Current V

F

e

0.45V

b

0.03

b

0.25 mA

I

R

Input Leakage Current V

R

e

5.25V 10 mA

V

C

Input Clamp Voltage I

C

eb

5mA

b

1.2 V

V

OL1

Output Low Voltage I

OL

e

25 mA 0.3 0.45 V

V

OL2

Output Low Voltage DP8216 I

OL

e

55 mA

0.5 0.6 V

DP8226 I

OL

e

50 mA

V

OH

Output High Voltage I

OH

eb

10 mA 2.4 3.0 V

I

SC

Output Short Circuit Current V

CC

e

5V

b

30

b

75

b

120 mA

l

I

O

l

Output Leakage Current TRI-STATE V

O

e

0.45V/5.5V 100 mA

RECEIVERS

V

IL

Input Low Voltage 0.95 V

V

IH

Input High Voltage 2 V

I

F

Input Load Current V

F

e

0.45V

b

0.08

b

0.25 mA

V

C

Input Clamp Voltage I

C

eb

5mA

b

1.2 V

V

OL

Output Low Voltage I

OL

e

15 mA 0.3 0.45 V

V

OH1

Output High Voltage I

OH

eb

1 mA 3.65 4.0 V

I

SC

Output Short Circuit Current V

CC

e

5V

b

15

b

35

b

65 mA

l

I

O

l

Output Leakage Current TRI-STATE V

O

e

0.45V/5.5V 20 mA

CONTROL INPUTS (CS, DIEN)

V

IL

Input Low Voltage 0.95 V

V

IH

Input High Voltage 2 V

I

F

Input Load Current V

F

e

0.45V

b

0.15

b

0.5 mA

I

R

Input Leakage Current V

R

e

5.25V 20 mA

I

CC

Power Supply Current

DP8216 95 130 mA
DP8226 85 120 mA

2