MM82PC08J/883 [NSC]
IC,BUS TRANSCEIVER,SINGLE,8-BIT,CMOS,DIP,20PIN,CERAMIC;
| 型号： | MM82PC08J/883 |
| 厂家： | 
National Semiconductor |
| 描述： | IC,BUS TRANSCEIVER,SINGLE,8-BIT,CMOS,DIP,20PIN,CERAMIC |
| 文件： | 总6页 (文件大小：127K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
July 1995
MM82PC08 8-Bit Bidirectional Transceiver
General Description
The MM82PC08 is an 8-bit TRI-STATE high-performance,
low-power microCMOS transceiver. It provides bidirectional
drive for bus-oriented microprocessor and digital communi-
cations systems. Straight through bidirectional transceivers
are featured.
Features
Y
microCMOS technology
É
Y
8-bit bidirectional data flow reduces system package
count
Y
Bidirectional TRI-STATE inputs/outputs interface with
bus-oriented systems
Y
Y
Y
Y
Y
Y
Y
Y
One input, Transmit/Receive, determines the direction of
logic signals through the bidirectional transceiver; Transmit
specifies data flow from Port A to Port B; Receive specifies
data flow from Port B to Port A. The Chip Disable input
disables both ports by placing them in the TRI-STATE
mode.
Full interface to CMOS logic levels
Pinouts simplify system interconnections
Transmit/receive and chip disable simplify control logic
Compact 20-pin dual-in-line package
Compact 28-pin leaded chip carrier
Low power
The MM82PC08 may be utilized in completing NSC800TM
high-performance, low-power designs. For military applica-
tions, the MM82PC08 is available with class B screening in
accordance with Method 5004 of MIL-STD-883.
Both ports have 150 pF load drive capability
TTL drive capability
e
When V
5V
CC
System Configuration and Connection Diagrams
Dual-In-Line Package
TL/C/5595–1
V Package
TL/C/5595–7
Top View
Order Number MM82PC08J or N
See NS Package J20A or N20A
Order Number MM82PC08V
See NS Package V28A
TL/C/5595–6
NSC800TM is a trademark of National Semiconductor Corp.
TRI-STATEÉ is a a registered trademark of National Semiconductor Corp.
C
1995 National Semiconductor Corporation
TL/C/5595
RRD-B30M105/Printed in U. S. A.
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Note: Absolute maximum ratings are those values beyond
which the safety of the device cannot be guaranteed. Con-
tinuous operation at these limits is not intended; operation
should be limited to those conditions specified under DC
Electrical Characteristics.
b
a
65 C to 150 C
Storage Temperature Range
§
§
Voltage at Any Pin with
Respect to Ground
b
a
0.3V
0.3V to V
CC
e
g
5V 10%
Operating Conditions V
Ambient Temperature
CC
Lead Temp. (Soldering, 10 seconds)
Power Dissipation
300 C
§
500 mW
b
a
55 C to 125 C
Military
§
§
Maximum V
7V
CC
b
a
40 C to 85 C
Industrial
§
§
§
§
a
0 C to 70 C
Commercial
DC Electrical Characteristics
a
e
0V, unless otherwise specified
g
5V 10%, GND
V
CC
Symbol
Parameter
Input High Voltage
Test Conditions
Min
Typ
Max
Units
V
V
V
0.7 V
0
V
CC
V
V
IH
CC
Input Low Voltage
0.2 V
IL
CC
e
e b
e
e
Output High Voltage
V
4.5V, V
4.5V,
0V
OH
CC
IH
2.4
V
V
I
2 mA
OH
e
V
OL
Output Low Voltage
V
V
5.5V, V
CC
IL
0.4
10
e
e
2 mA
5.5V, I
OL
IH
e
e
e
e
I
I
I
Input High Current
Input Low Current
Output High Current
V
CC
V
CC
5.5V, V
5.5V
0V
mA
mA
IH
IN
IN
e
b
10
5.5V, V
IL
e
V
V
4.5V, V
4.5V
2.4V,
OH
CC
OUT
b
2.0
mA
e
IH
e
e
I
I
I
Output Low Current
V
V
5.5V, V
0.4V,
OL
CC
OUT
2.0
mA
e
0V
IL
e
e
5.5,V
Power Supply Current
V
V
5.5V, V
400
mA
CC
CC
IH
e
0V
IL
e
e
e
b
a
TRI-STATE Low Leakage Current
TRI-STATE High Leakage Current
V
5.5V, V
4.5V, V
0V
10
10
mA
mA
OZL
CC
CC
OUT
e
V
V
4.5V
OZH
OUT
e
e
e
0V, C 150 pF
L
g
5V 10%, GND
AC Electrical Characteristics V
CC
Typ
Max
Symbol
Parameter
Test Conditions
Min
Units
ns
100 pF
100 pF
t
t
t
Propagation Delay to Logical ‘‘1’’
from Port A, B to Port B, A
SeeFigure 1
DLH
50
70
Propagation Delay to Logical ‘‘0’’
from Port A, B to Port B, A
SeeFigure 1
SeeFigure 2
DHL
50
55
70
ns
Propagation Delay from High
Impedance to Logical ‘‘1’’from
T/R to Port
ZHTR
100
ns
t
t
Propagation Delay from High
Impedance to Logical ‘‘0’’from
T/R to Port
SeeFigure 2
SeeFigure 2
ZLTR
HZTR
65
50
100
100
ns
ns
Propagation Delay from Logical ‘‘1’’ to
High Impedance from T/R to Port
2
e
e
e
0V, C 150 pF (Continued)
L
g
5V 10%, GND
AC Electrical Characteristics V
CC
Typ
Max
Symbol
Parameter
Test Conditions
Min
Units
100 pF
100 pF
t
Propagation Delay from Logical ‘‘0’’ to
High Impedance from T/R to Port
SeeFigure 2
LZTR
ZH
55
100
100
ns
t
Propagation Delay from High
Impedance to Logical ‘‘1’’ from
CD to Port
SeeFigure 3
SeeFigure 3
50
65
ns
ns
t
ZL
Propagation Delay from High
Impedance to Logical ‘‘0’’ from
CD to Port
100
t
t
Propagation Delay from Logical ‘‘1’’ to
High Impedance from CD to Port
SeeFigure 3
SeeFigure 3
HZ
50
55
100
100
ns
ns
Propagation Delay from Logical ‘‘0’’ to
High Impedance from CD to Port
LZ
Timing Waveforms
TL/C/5595–2
FIGURE 1. Propagation Delay from Input Port to Output Port
TL/C/5595–3
FIGURE 2. Propagation Delay from T/R to Ports
3
Timing Waveforms (Continued)
TL/C/5595–4
FIGURE 3. Propagation Delay from CD to Ports
Pin Descriptions
INPUT SIGNALS
INPUT/OUTPUT SIGNALS
Port A (A –A ): Port A is an 8-bit bidirectional port with
TRI-STATE outputs for bus-oriented microprocessor and
digital communications systems.
Chip Disable (CD): When CD is high, Port A and Port B are
disabled. A low on CD allows data to be transmitted in the
direction specified by T/R.
0
7
Transmit/Receive (T/R): When T/R is high, Port A is des-
ignated as ‘‘IN’’ and Port B is designated as ‘‘OUT.’’ When
T/R is low, the flow is reversed so that the Port B is ‘‘IN’’
and Port A is ‘‘OUT’’.
Port B (B –B ): Port B is identical to Port A including drive
0 7
capability.
Logic Diagram
Truth Table
Resulting
Inputs
Conditions
Chip Disable
Transmit/Receive
Port A
Port B
0
0
1
0
1
X
OUT
IN
IN
OUT
High Z
High Z
e
X
don’t care
Reliability Information
Gate Count 70
Transistor Count 174
TL/C/5595–5
FIGURE 4
4
Ordering Information
TL/C/5595–8
Note 1: Do not specify a temperature option; all parts are screened to military temperature.
Physical Dimensions inches (millimeters)
Molded Dual-In-Line Package (N)
Order Number MM82PC08N
NS Package Number N20A
5
Physical Dimensions inches (millimeters) (Continued)
Plastic Chip Carrier (V)
Order Number MM82PC08V
NS Package Number V28A
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failure to perform, when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
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