MC34C87D [MOTOROLA]
Quad EIA-422-A Line Driver; 四EIA- 422 -A线路驱动器
| 型号： | MC34C87D |
| 厂家： | 
MOTOROLA |
| 描述： | Quad EIA-422-A Line Driver |
| 文件： | 总4页 (文件大小：120K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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by MC34C87/D
SEMICONDUCTOR TECHNICAL DATA
Product Preview
P SUFFIX
PLASTIC DIP
CASE 648
CMOS
16
1
The MC34C87 is a quad differential line driver designed for digital data
transmission over balanced lines. The MC34C87 meets all the requirements of
standard EIA–422–A while retaining the low–power characteristics of CMOS.
The MC34C87 accepts TTL or CMOS input levels and translates these to
EIA–422–A output level. This part uses special output circuitry that enables the
individual drivers to power down without loading down the bus. The MC34C87
also includes special circuitry which will set the outputs to a high impedance
mode during power up or down, preventing spurious glitches. Each enable pin
controls two drivers.
D SUFFIX
SOG PACKAGE
CASE 751B
16
1
ORDERING INFORMATION
MC34C87P
MC34C87D
Plastic DIP
SOG Package
The MC34C87 is pin compatible with the MC3487.
All pins are protected against damage due to electrostatic discharges.
•
•
•
•
•
•
Maximum Power Supply Current: 3 mA
2000 V ESD Protection on the Inputs and the Outputs
TTL/CMOS Input Compatible
Typical Propagation Delay: 6 ns
Typical Output Skew: 1 ns
Meets V = 6.0 V (and V = – 0.25 V), V
Requirement
= 0 V, I < 100 µA
O
O
O
CC
•
•
Operation from Single 5 V Supply
High Impedance Mode for Outputs Connected to System Buses
BLOCK DIAGRAM
C/D
CONTROL
INPUT D
15
INPUT C
9
INPUT B
7
INPUT A
1
4
12
8
16
14
13
10
11
6
5
2
3
GND
V
OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT
D2 D1 C2 C1 B2 B1 A2 A1
CC
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
REV 3
1993
Motorola, Inc. 1995
TRUTH TABLE
Non–Inverting
Output
Inverting
Output
Control Input
Input
L
H
H
X
H
L
Z
H
L
Z
L
H
X = Don’t Care
Z = High Impedance
H = High Logic State
L = Low Logic State
MAXIMUM RATINGS
Rating
This device contains circuitry to protect the
inputs against damage due to high static volt-
ages or electric fields; however, it is advised that
normal precautions be taken to avoid applica-
tions of any voltage higher than the maximum
rated voltages to this high impedance circuit.
For proper operation it is recommended that
Symbol
Value
Unit
Power Supply Voltage
DC Input Voltage
V
CC
7
V
V
V
in
– 1.5 to V
+ 1.5
+ 0.5
CC
DC Output Voltage*
DC Output Current, per Pin
V
out
– 0.5 to V
V
CC
I
I
150
150
mA
mA
°C
mW
V
out
V
and V
out
in out DD
be constrained to the range V
≤
SS
in
(V or V ) ≤ V . Reliability of operation is
enhanced if unused inputs are tied to and
DC V
CC
or GND Current, per Pin
DD
Storage Temperature
Power Dissipation
T
stg
– 65 to + 150
500
appropriate logic voltage level (e.g., either V
or V ).
DD
SS
P
D
ESD (Human Body Model)
* Power–on conditions.
2000
OPERATING CONDITIONS
Rating
Symbol
Min
4.5
0
Max
Unit
Power Supply Voltage
DC Input Voltage
V
CC
5.5
V
V
V
in
V
CC
Operating Temperature Range
Input Rise and Fall Time
T
– 40
—
+ 85
500
°C
ns
A
t , t
r f
DC CHARACTERISTICS (V
= 4.5 to 5.5 V, T = – 40 to + 85°C, unless otherwise stated)
A
CC
Parameter
Symbol
Min
—
Typ
—
Max
0.8
Unit
V
Input Voltage (Low Logic State)
Input Voltage (High Logic State)
V
IL
V
2.0
—
—
—
V
IH
Output Voltage (Low Logic State) I
= 20 mA
= – 20 mA
Output Differential Voltage R = 100 Ω (Note 1)
V
0.3
2.8
—
0.5
V
sink
OL
OH
OD
Output Voltage (High Logic State) I
source
V
V
2.5
2.0
—
—
V
—
V
L
Output Differential Voltage Difference R = 100 Ω (Note 1)
D(V
)
—
± 0.4
3.0
V
L
OD
OS
Output Offset Voltage R = 100 Ω (Note 1)
V
—
—
V
L
Output Offset Voltage Difference R = 100 Ω (Note 1)
D(V
)
OS
—
—
± 0.4
± 1.0
3.0
V
L
Input Current V = V , GND, V or V
I
in
—
—
µA
mA
mA
µA
µA
in
CC
IH
IL
Quiescent Supply Current I
= 0 µA
I
I
—
—
out
CC
Output Short Circuit Current (Note 2)
– 30
—
– 100
—
– 150
± 1.0
OS
Output Leakage Current (High–Z State) V
= V
CC
or GND
I
O(Z)
out
Output Leakage Current (Power Off)
V
= 6 V
I
I
—
—
—
—
100
– 100
out
= – 0.25 V
oxh
oxl
V
out
NOTES:
1. See EIA specifications EIA–422–A for exact test conditions.
2. Only one output may be shorted at a time.
MC34C87
MOTOROLA
2
AC CHARACTERISTICS (V
CC
= 4.5 to 5.5 V, T = – 40 to + 85°C, unless otherwise stated)
A
Parameter
Symbol
Min
Typ
Max
Unit
Propagation Delay Input to Output (S1 Open)
t
t
—
6
12
ns
PLH
PHL
Output Skew (S1 Open)*
Skew
—
—
1.0
4
4
8
ns
ns
Differential Output
Rise Time
Fall Time (S1 Open)
t
t
TLH
THL
Output Enable Time
(S1 Closed)
t
t
—
—
16
15
—
—
ns
ns
PZH
PZL
Output Disable Time
(S1 Closed)
t
t
—
—
6
9
—
—
PHZ
PLZ
* Skew: difference in propagation delays between complementary outputs.
AC TEST CIRCUIT AND SWITCHING TIME WAVEFORMS
3 V —
INPUT
0 V
1.5 V
1.5 V
t
t
PHL
PLH
1.5 V
SKEW
— V
OH
1.5 V
OUTPUT A
OUTPUT B
1.5 V
47 pF
47 pF
49.9
499
Ω
Ω
V
OL
INPUT
47 pF
t
t
PLH
S1
PHL
V
OH
49.9
Ω
1.5 V
1.5 V
— V
OL
Figure 1. AC Test Circuit
Figure 2. Propagation Delays and Skew Waveforms
3 V —
1.5 V
ENABLE INPUT
0 V
1.5 V
t
PLZ
t
PZL
3 V —
INPUT
— 1.5 V
0.8 V
OUTPUT A
OUTPUT B
V
+ 0.5 V
OL
0 V
V
OL
t
t
PHZ
PZH
90%
10%
90%
10%
V
OH
OUTPUT
(DIFFERENTIAL)
V
– 0.5 V
2.0 V
OH
t
— 1.5 V
TLH
t
THL
Figure 3. Enable and Disable Times
Figure 4. Differential Rise and Fall Times
TYPICAL APPLICATIONS
ENABLE
DATA
+
DATA
OUTPUT
–
Figure 5. Two–Wire Balanced Systems (EIA–422–A)
MOTOROLA
MC34C87
3
PACKAGE DIMENSIONS
P SUFFIX
PLASTIC DIP
CASE 648–08
NOTES:
–A–
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
16
1
9
8
B
S
INCHES
MILLIMETERS
DIM
A
B
C
D
F
MIN
MAX
0.770
0.270
0.175
0.021
0.70
MIN
18.80
6.35
3.69
0.39
1.02
MAX
19.55
6.85
4.44
0.53
1.77
F
0.740
0.250
0.145
0.015
0.040
C
L
SEATING
PLANE
–T–
G
H
J
K
L
0.100 BSC
0.050 BSC
2.54 BSC
1.27 BSC
K
M
0.008
0.015
0.130
0.305
10
0.21
0.38
3.30
7.74
10
H
J
0.110
0.295
0
2.80
7.50
0
G
D 16 PL
M
S
0.020
0.040
0.51
1.01
M
M
0.25 (0.010)
T
A
D SUFFIX
SOG PACKAGE
CASE 751B–05
–A–
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
16
1
9
8
–B–
P 8 PL
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
M
S
0.25 (0.010)
B
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
G
MILLIMETERS
INCHES
DIM
A
B
C
D
MIN
9.80
3.80
1.35
0.35
0.40
MAX
10.00
4.00
1.75
0.49
1.25
MIN
MAX
0.393
0.157
0.068
0.019
0.049
F
0.386
0.150
0.054
0.014
0.016
R X 45
K
C
F
G
J
K
M
P
R
1.27 BSC
0.050 BSC
–T–
SEATING
PLANE
0.19
0.10
0
0.25
0.25
7
0.008
0.004
0
0.009
0.009
7
J
M
D
16 PL
5.80
0.25
6.20
0.50
0.229
0.010
0.244
0.019
M
S
S
0.25 (0.010)
T
B
A
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
andspecifically disclaims any and all liability, includingwithoutlimitationconsequentialorincidentaldamages. “Typical” parameters can and do vary in different
applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does
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MC34C87/D
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