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Motorola s Quad EIA–422 Driver features four independent driver chains
which comply with EIA Standards for the Electrical Characteristics of
Balanced Voltage Digital Interface Circuits. The outputs are three–state
structures which are forced to a high impedance state when the appropriate
output control pin reaches a logic zero condition. All input pins are PNP
buffered to minimize input loading for either logic one or logic zero inputs. In
addition, internal circuitry assures a high impedance output state during the
transition between power up and power down. A summary of MC3487
features include:
•
QUAD EIA–422 LINE DRIVER
WITH THREE–STATE
OUTPUTS
SEMICONDUCTOR
TECHNICAL DATA
Four Independent Driver Chains
•
Three–State Outputs
•
PNP High Impedance Inputs (PIA Compatible)
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
•
Fast Propagation Times (Typical 15 ns)
•
TTL Compatible
•
Single 5.0 V Supply Voltage
•
Output Rise and Fall Times Less Than 20 ns
•
DS 3487 Provides Second Source
P SUFFIX
PLASTIC PACKAGE
CASE 648
Driver Block Diagram
PIN CONNECTIONS
Non–I nverting
Input
Input A
1
16
V CC
Input D
Outputs
2
3
15
Outputs A
14
Outputs D
A/B Control
4
13
Inverting
5
6
12
C/D Control
Outputs B
11
Outputs C
Input B
7
10
Output
Control
Gnd
8
9
Input C
TRUTH TABLE
Input
Control Input
Non–Inverting Output
Inverting Output
H
H
H
L
ORDERING INFORMATION
L
H
L
H
X
L
Z
Z
Operating
Temperature Range
Device
Package
L = Low Logic State
H = High Logic State
X = Irrelevant
Z = Third–State (High Impedance)
MC3487P
MC3487D
T A = 0 to +70
C
Plastic DIP
SO–16
W
Motorola, Inc. 1995
MOTOROLA ANALOG IC DEVICE DATA
1
°
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MC3487
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
V CC
8.0
Vdc
Input Voltage
V I
5.5
Vdc
Operating Ambient Temperature Range
T A
0 to +70
°
C
Operating Junction Temperature Range
T J
150
° C
Storage Temperature Range
T stg
–65 to +150
° C
ELECTRICAL CHARACTERISTICS (Unless otherwise noted, specifications apply 4.75 V V CC 5.25 V and 0 ° C T A 70 ° C.
Typical values measured at V CC = 5.0 V, and T A = 25 ° C.)
Characteristic
Symbol
Min
Typ
Max
Unit
Input Voltage – Low Logic State
V IL
–
–
0.8
Vdc
Input Voltage – High Logic State
V IH
2.0
–
–
Vdc
Input Current – Low Logic State
(V IL = 0.5 V)
I IL
–
–
– 400
m A
Input Current – High Logic State
(V IH = 2.7 V)
(V IH = 5.5 V)
I IH
m A
–
–
–
–
+ 50
+ 100
Input Clamp Voltage
(I IK = –18 mA)
V IK
–
–
– 1.5
V
Output Voltage – Low Logic State
(I OL = 48 mA)
V OL
–
–
0.5
V
Output Voltage – High Logic State
(I OH = – 20 mA)
V OH
2.5
–
–
V
Output Short–Circuit Current
(V IH = 2.0 V, Note 1)
I OS
– 40
–
– 140
mA
Output Leakage Current – Hi–Z State
(V IL = 0.5 V, V IL(Z) = 0.8 V)
(V IH = 2.7 V, V IL(Z) = 0.8 V)
I OL(Z)
m A
–
–
–
–
± 100
± 100
Output Leakage Current – Power OFF
(V OH = 6.0 V, V CC = 0 V)
(V OL = –0.25 V, V CC = 0 V)
I OL(off)
m A
–
–
–
–
+ 100
– 100
Output Offset Voltage Difference (Note 2)
V OS – V OS
–
–
± 0.4
V
Output Differential Voltage (Note 2)
V OD
2.0
–
–
V
Output Differential Voltage Difference (Note 2)
hD V OD Y
–
–
± 0.4
V
Power Supply Current
(Control Pins = Gnd, Note 3)
(Control Pins = 2.0 V)
mA
I CCX
I CC
–
–
–
–
105
85
NOTES: 1. Only one output may be shorted at a time.
2. See EIA Specification EIA–422 for exact test conditions.
3. Circuit in three–state condition.
SWITCHING CHARACTERISTICS (V CC = 5.0 V, T A = 25 ° C, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Propagation Delay Times
High to Low Output
Low to High Output
ns
t PHL
t PLH
–
–
–
–
20
20
Output Transition Times – Differential
High to Low Output
Low to High Output
ns
t THL
t TLH
–
–
–
–
20
20
Propagation Delay – Control to Output
(R L = 200
ns
W
, C L = 50 pF)
t PHZ(E)
t PLZ(E)
t PZH(E)
t PZL(E)
–
–
–
–
–
–
–
–
25
25
30
30
(R L = 200
W
, C L = 50 pF)
, C L = 50 pF)
(R L = 200 W , C L = 50 pF)
8
2
MOTOROLA ANALOG IC DEVICE DATA
(R L =
11023842.002.png 11023842.003.png
MC3487
Figure 1. Three–State Enable Test Circuit
and Waveforms
To Scope (Input)
3.0 V or Gnd
Input
To Scope
Output
Pulse generator characteristics
Z o = 50
Inv
Out p ut
Open for t PZH(E) Test Only
W
PRR = 1.0 MHz
50% Duty Cycle
t TLH , t THL 5 ns
5.0 V
Non–Inv
Output
200
C L
50 pF
Control
1N3064
or Equivalent
Pulse
Generator
50
1.0 k
C L Includes Probe and
Jig Capacitance
Open for
t PZL(E) Test Only
3.0 V
3.0 V
Control
Input
1.5 V
Control
Input
1.5 V
0
0
t PZL(E)
t PHZ(E)
V OH
Output
1.5 V
0.5 V
V OL
Output
0 V
1.5 V
t PZH(E)
V OH
9 1.5 V
t PLZ(E)
Output
1.5 V
Output
0.5 V
V OL
0 V
0 V
Figure 2. Propagation Delay Times Input to
Output Waveforms and Test Circuit
Scope
(Output)
5.0 V
Scope
(Input)
Inv
Output
R L = 200
W
1/4
MC3487
Pulse
Generator
51
Non–Inv
Output
1N914 or
Equivalent
C L = 50 pF
W
PRR = 1.0 MHz
50% Duty Cycle
t TLH , t THL 5 ns
Control
3.0 V
C L includes probe
and jig capacitance
3.0 V
Input
1.5 V
1.5 V
0 V
t PHL
t PL H
V OH
Output
1.5 V
1.5 V
V OL
0 V
t PLH
t PHL
V OH
Output
1.5 V
1.5 V
V OL
MOTOROLA ANALOG IC DEVICE DATA
3
Pulse generator characteristics
Z o = 50
0 V
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MC3487
Figure 3. Output Transition Times Test Circuit and Waveforms
Scope
Input
3.0 V
Scope
Output
(Differential)
Input
1/4
MC3487
C L
15 pF
R L =
100 W
0 V
51
t TLH
t THL
3.0 V
C L
C L includes probe
and jig capacitance
90%
Output
(Differential)
Pulse generator characteristics
Z o = 50
W
PRR = 1.0 MHz
50% Duty Cycle
t TLH , t THL 5 ns
10%
Figure 4. Output Current versus Output Voltage
Figure 5. Output Sink Current versus
Output Voltage
80
80
70
70
60
(Typical)
V CC = 5.25 V
60
(Typical)
V CC = 5.0 V
T A = 25
°
C
50
V CC = 5.0 V
V CC = 4.75 V
50
40
40
30
30
20
T A = 25
C
20
10
10
0
0
0
1.0
2.0
3.0
4.0
0
100
200
300
400
500
600
700
800
V OH , OUTPUT VOLTAGE (V)
V OL , OUTPUT VOLTAGE – LOW (mV)
4
MOTOROLA ANALOG IC DEVICE DATA
°
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MC3487
OUTLINE DIMENSIONS
–A–
D SUFFIX
PLASTIC PACKAGE
CASE 751B–05
(SO–16)
ISSUE J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
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.
16
9
–B–
P
8 PL
1
8
0.25 (0.010)
M
B S
G
MILLIMETERS
INCHES
DIM MIN
MAX
MIN
MAX
K
R X 45
F
A
9.80 10.00 0.386 0.393
B
3.80
4.00 0.150 0.157
C
1.35
1.75 0.054 0.068
C
D
0.35
0.49 0.014 0.019
F
0.40
1.25 0.016 0.049
–T–
SEATING
PLANE
G
1.27 BSC
0.050 BSC
M
J
J
0.19
0.25 0.008 0.009
K
0.10
0.25 0.004 0.009
D
16 PL
M
0
7
0
7
P
5.80
6.20 0.229 0.244
0.25 (0.010)
T
B
A S
M
S
R
0.25
0.50 0.010 0.019
– A–
P SUFFIX
PLASTIC PACKAGE
CASE 648–08
ISSUE R
NOTES:
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
9
B
1
8
INCHES
MILLIMETERS
F
DIM MIN
MAX
MIN
MAX
C
L
A
0.740 0.770 18.80 19.55
B
0.250 0.270
6.35
6.85
S
C
0.145 0.175
3.69
4.44
D
0.015 0.021
0.39
0.53
–T–
SEATING
F
0.040
0.70
1.02
1.77
PLANE
G
0.100 BSC
2.54 BSC
H
0.050 BSC
1.27 BSC
H
K
J
M
J
0.008 0.015
0.21
0.38
G
K
0.110 0.130
2.80
3.30
L
0.295 0.305
7.50
7.74
D
16 PL
M
0
10
0
1.01
0.25 (0.010)
M
T
A
M
S
0.020 0.040
0.51
MOTOROLA ANALOG IC DEVICE DATA
5
10
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