Order this document by MC34050/D
The MC34050/51 are dual transceivers which comply with EIA Standards
EIA–422 (Balanced line) and EIA–423 (Unbalanced line). Each device
contains two drivers and two receivers.
The MC34050 has a DRIVER ENABLE (for both drivers) and a
RECEIVER ENABLE (for both receivers). Connecting the two ENABLES
together provides Driver–to–Receiver switching from a single line.
The MC34051 has a DRIVER ENABLE for each driver. The two receivers
are permanently enabled.
The Driver inputs, Receiver outputs, and Enable inputs are 74LS TTL
compatible.
• Two Independent Drivers and Receivers Per Package
•
•
•
•
•
•
DUAL EIA–422/423
TRANSCEIVERS
SEMICONDUCTOR
TECHNICAL DATA
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
3–State Outputs
Single 5.0 V Supply
Internal Hysteresis (50 mV Typical) on Receivers
Receivers Provide Fail–Safe Function. Output Stays High if Inputs are
Open, Shorted (floating), or Terminated (floating)
Receivers May Be Used in EIA–422 or 423 Systems
P SUFFIX
PLASTIC PACKAGE
CASE 648
Drivers Meet Full EIA–422 Standards
PIN CONNECTIONS
Receiver Block Diagram
Diff. Inputs
+
REC ENABLE (MC34050 Only)
–
Input
Network
Level
Translator
Output
REC1 In–
1
–
+
16 VCC
15 DR1 In
REC1 In+
2
REC1 Out
3
14 DR1 Out
13 DR1 Out
REC EN
4
REC2 Out
5
REC2 In+
6
–
11 DR2 Out
REC2 In–
7
+
10 DR2 Out
GND
8
12 DR EN
9
DR2 In
(MC34050)
Hysteresis
Driver Block Diagram
Inverting
Data
Input
Outputs
Noninverting
Driver Enable
REC1 In–
1
–
16 VCC
15 DR1 In
REC1 In+
2
+
REC1 Out
3
14 DR1 Out
13 DR1 Out
DR1 EN
4
REC2 Out
5
REC2 In+
6
–
11 DR2 Out
REC2 In–
7
+
10 DR2 Out
GND
8
12 DR2 EN
9
DR2 In
(MC34051)
ORDERING INFORMATION
TRUTH TABLE
Driver
Data
L
H
X
EN
H
H
L
Inv. Out
H
L
Z
Receiver
Noninv. Out
L
H
Z
Input
u + 0.2 V Diff.
t – 0.2 V Diff.
X
EN
L
L
H
Device
Operating
Temperature Range
Package
Output
MC34050D
SO–16
H
L
Z
MC34050P
Plastic DIP
MC34051P
TA = 0° to +70°C
MC34051D
Plastic DIP
SO–16
 Motorola, Inc. 1995
MOTOROLA ANALOG IC DEVICE DATA
1
MC34050 MC34051
MAXIMUM RATINGS
Rating
Value
Units
Power Supply Voltage (VCC)
7.0
Vdc
Input Common Mode Voltage (Receivers)
± 25
Vdc
Input Differential Voltage (Receivers)
± 25
Vdc
Output Sink Current (Receivers)
50
mA
Enable Input Voltage (Drivers and Receivers)
5.5
Vdc
Input Voltage (Drivers)
5.5
Vdc
Applied Output Voltage (3–State mode) – Receivers
– 1.0 to + 7.0
Vdc
Applied Output Voltage (3–State mode) – Drivers
– 1.0 to + 7.0
Vdc
Junction Temperature
– 65 to + 150
°C
Storage Temperature
– 65 to + 150
°C
Devices should not be operated at these values.
The “Recommended Operating Limits” provide for actual device operation.
RECOMMENDED OPERATING LIMITS
Characteristic
Min
Typ
Max
Unit
Power Supply Voltage
+ 4.75
+ 5.0
+ 5.25
Vdc
Input Common Mode Voltage (Receivers)
– 7.0
–
+ 7.0
Vdc
Input Differential Voltage (Receivers)
– 6.0
–
+ 6.0
Vdc
Enable Input Voltage (Drivers and Receivers)
0
–
+ 5.25
Vdc
Input Voltage (Drivers)
0
–
+ 5.25
Vdc
Ambient Temperature Range
0
–
+ 70
°C
ELECTRICAL CHARACTERISTICS (Unless otherwise noted, specifications apply for 4.75
Characteristic
Symbol
t VCC t 5.25 V, and 0° t TA t 70°C).
Min
Typ
Max
Unit
DRIVERS
Input Voltage – Low
VILD
–
–
0.8
Vdc
Input Voltage – High
VIHD
2.0
–
–
Vdc
Input Current @ VIL = 0.4 V
IILD
– 360
–
–
µA
Input Current @ VIH = 2.7 V
Input Current @ VIH = 5.25 V
IIHD
–
–
–
–
+ 20
+ 100
µA
Input Clamp Voltage (IIK = – 18 mA)
VIKD
– 1.5
–
–
Vdc
Output Voltage – Low (IOL = 20 mA)
VOLD
–
–
0.5
Vdc
Output Voltage – High (IOH = – 20 mA)
VOHD
2.5
–
–
Vdc
Output Offset Voltage Difference (Note 1)
VOSD
– 0.4
–
+0.4
Vdc
VT
2.0
–
–
Vdc
Output Differential Voltage Difference (Note 1)
VTD
– 0.4
–
+0.4
Vdc
Short Circuit Current (VCC = 5.25 V)
(From High Output, Note 2)
IOSD
– 150
–
–30
mA
Output Leakage Current – Hi–Z State
(Vout = 0.5 V, DR EN = 0.8 V)
(Vout = 2.7 V, DR EN = 0.8 V)
IOZD
– 100
– 100
–
–
+ 100
+ 100
Output Leakage – Power Off
(Vout = – 0.25 V, VCC = 0 V)
(Vout = 6.0 V, VCC = 0 V)
IO(off)
– 100
–
–
–
–
+ 100
Output Differential Voltage (Note 1)
µA
µA
NOTES: 1. See EIA Standard EIA–422 and Figure 1 for exact test conditions.
2. Only one output in a package should be shorted at a time, for no longer than 1 second.
2
MOTOROLA ANALOG IC DEVICE DATA
MC34050 MC34051
ELECTRICAL CHARACTERISTICS (Unless otherwise noted, specifications apply for 4.75
Characteristic
Symbol
t VCC t 5.25 V, and 0° t TA t 70°C).
Min
Typ
Max
–
– 0.2
–
–
+ 0.2
–
–
– 2.8
–
–
+ 2.3
–
Unit
RECEIVERS
Differential Input Threshold Voltage (Note 3)
(– 7.0 V
VICM
7.0, Vout 2.7 V)
(– 7.0 V
VICM
7.0, Vout
0.45 V)
t
t
t
t
q
p
Input Bias Current
(0
VCC
5.25 V, Vin = 15 V)
(0
VCC
5.25 V, Vin = – 15 V)
p
p
p
p
Input Balance and Output Level
(– 7.0
VICM
7.0 V)
(VID = 0.4 V, IO = – 400 µA)
(VID = – 0.4 V, IO = 8.0 mA)
p
p
VTHR
Vdc
IIBR
mA
Vdc
VOHR
VOLR
2.7
–
–
–
–
0.45
– 100
– 100
–
–
+ 100
+ 100
µA
Output Leakage Current – 3–State (Pin 4 = 2.0 V, MC34050 only)
(VID = 3.0 V, VO = 0.4 V)
(VID = – 3.0 V, VO = 2.4 V)
IOZR
Output Short Circuit Current (Note 2, VCC = 5.25 V)
(VID = 3.0 V, MC34050 Pin 4 = 0.4 V, VO = 0 V)
IOSR
– 85
–
– 15
mA
VILE
–
–
0.8
Vdc
ENABLES
Input Voltage – Low
Input Voltage – High
VIHE
2.0
–
–
Vdc
Input Current @ VIL = 0.4 V (Receiver EN)
Input Current @ VIL = 0.4 V (Driver EN)
IILER
IILED
– 100
– 360
–
–
–
–
µA
Input Current @ VIH = 2.7 V
Input Current @ VIH = 5.25 V
IIHE
–
–
–
–
+ 20
+ 100
µA
Input Clamp Voltage (IIK = –18 mA)
VIKE
– 1.5
–
–
Vdc
ICC
–
55
80
mA
Unit
POWER SUPPLY
Power Supply Current @ VCC = 5.25 V
NOTES: 2. Only one output in a package should be shorted at a time, for no longer than 1 second.
3. Differential input threshold voltage and guaranteed output levels are done simultaneously for worst case.
DRIVER SWITCHING CHARACTERISTICS (VCC = 5.0 V, TA = 25°C, see Figure 2).
Characteristic
Propagation Delay
Data Input to Output High–to–Low
Data Input to Output Low–to–High
Output Skew (ĂtPHL – tPLH each driver)
Enable Input to Output
CL = 10 pF, RL = 75 Ω to Gnd
CL = 10 pF, RL = 180 Ω to VCC
CL = 30 pF, RL = 75 Ω to Gnd
CL = 30 pF, RL = 180 Ω to VCC
Maximum Data Input Transition Time (10% to 90%)
Symbol
Min
Typ
Max
tPHLD
tPLHD
tSKD
–
–
–
–
–
–
20
20
8
tPHZD
tPLZD
tPZHD
tPZLD
–
–
–
–
–
–
–
–
30
35
40
45
tTRD
–
50
–
ns
Unit
ns
RECEIVER SWITCHING CHARACTERISTICS (VCC = 5.0 V, TA = 25°C, see Figure 3).
Characteristic
Propagation Delay
Differential Input to Output – High–to–Low
Differential Input to Output – Low–to–High
Enable Input – Output Low to 3–State
Enable Input – Output High to 3–State
MC34050 Only
Enable Input – Output 3–State to High
Enable Input – Output 3–State to Low
MOTOROLA ANALOG IC DEVICE DATA
Symbol
Min
Typ
Max
tPHLR
tPLHR
tPLZR
tPHZR
tPZHR
tPZLR
–
–
–
–
–
–
–
–
–
–
–
–
30
30
35
35
30
30
ns
3
MC34050 MC34051
Figure 1. Driver Output Test Circuit
V
50 Ω, 1%
Vin = 3.0 V
Vin’ = 0 V
VT
D
V
OSD
ODD
+  V OS – VOSȀ ;
+  VT –  VTȀ
50 Ω, 1%
VOS
Circuit per EIA–422–A, Dec. 1978
Figure 2. Driver Switching Test Circuits
3.0 V
5.0 V
3.0 V
To
Scope
A
Input
180 Ω
0
D
1.3 V
1.3 V
tPLHD
tPHLD
1.3 V
A
B
30 pF
75 Ω
SG
B
1.3 V
VOL
3.0 V
Input
SG
To
Scope
A
180 Ω
0
VOL
tPLHD
tPHLD
Output
VOH
1.3 V
1.3 V
1.3 V
1.3 V
0.5 V
tPZHD
5.0 V
VOH
1.3 V
D
B
CL
75 Ω
RL
3.0 V or GND
tPHZD
tPLZD
tPZLD
Output
VOL
VOH
1.3 V
0.5 V
SG: 1.0 MHz, 50% duty cycle, tR, tF = 6.0 ns (10% to 90%)
RL = 75 Ω to GND for tPZHD and tPHZD, 180 Ω to VCC for tPZLD and tPLZD;
CL = 10 pF for tPHZD and tPLZD, 30 pF for tPZHD and tPZLD.
Figure 3. Receiver Switching Test Circuits
3.0 V
To
Scope
Input
1.5 V
tPHLR
tPLHR
+
1.3 V
Output
–
SG
1.5 V
0
1.3 V
15 pF
VOH
VOL
1.5 V
5.0 V
SG
–
S1
3.0 V
1.5 V
Input
2.0 k
To
Scope
0
1.5 V
0.5 V
tPZHR
VOH
1.5 V
+
15 pF
5.0 k
Va
Output
1N916′s
or
equivalent
S2
tPHZR
tPZLR
VOL
tPLZR
1.5 V
0.5 V
MC34050 Only
SG: 1.0 MHz, 50% duty cycle, tR, tF = 6.0 ns (10% to 90%)
Va = + 1.5 V for tPHZ, tPZH; Va = – 1.5 V for tPLZ, tPZL.
S1, S2 closed for tPHZ, tPLZ; S1 open, S2 closed for tPZH; S1 closed, S2 open for tPZL.
4
MOTOROLA ANALOG IC DEVICE DATA
MC34050 MC34051
Figure 4. Driver Input Characteristics
Figure 5. Driver Differential Output Characteristics
3.8
30
V T, DIFFERENTIAL VOLTAGE (V)
0
INPUT CURRENT ( µA)
– 30
– 60
– 90
– 120
– 150
p
– 210
p
Typical @ 25°C
4.75 V VCC 5.25 V
– 180
VCC = 5.25 V
3.4
VCC = 5.0 V
3.0
2.6
I
2.2
VCC = 4.75 V
VT
D
Typical @ 25°C
1.8
1.4
0
3.0
2.0
INPUT VOLTAGE (V)
1.0
4.0
5.0
0
10
Figure 6. Driver Output Voltage
20
30
LOAD CURRENT
Figure 7. Driver Output Voltage
VCC = 5.25 V
VOHD(V)
400
VOLD (mV)
50
4.0
500
300
VCC = 5.0 V
3.0
5.0
200
VOHD
IOHD
D
5.0
IOLD
VOLD
D
100
p
0
10
20
p
30
40
VCC = 4.75 V
Typical @ 25°C
Typical @ 25°C
4.75 V VCC 5.25 V
0
2.0
50
0
– 10
– 20
– 30
– 40
– 50
IOHD (mA)
IOLD (mA)
Figure 8. Receiver Output Voltage
Figure 9. Receiver Output Voltage
400
5.0
300
4.5
VOHR (V)
VOLR (mV)
40
200
4.0
3.5
100
Typical @ 25°C
VCC = 5.0 V
Typical @ 25°C
VCC = 5.0 V
0
3.0
0
2.0
4.0
IOLR (mA)
MOTOROLA ANALOG IC DEVICE DATA
6.0
8.0
0
– 100
– 200
IOHR (µA)
– 300
– 400
5
MC34050 MC34051
Figure 10. Receiver Input Characteristics
Figure 11. Enable Input Characteristics
0.8
2.0
0
– 2.0
I
INPUT CURRENT (mA)
VCC = 4.75 V
INPUT CURRENT ( µA)
R
0.4
VCC = 5.0 V
0
VCC = 5.25 V
– 0.4
Receiver
Enable
– 6.0
– 10
Driver Enable
– 14
– 18
Typical @ 25°C
VCC = 5.0 V
– 0.8
– 22
Typical @ 25°C
– 1.2
– 7.0
– 26
– 5.0
– 3.0
– 1.0
1.0
INPUT VOLTAGE (V)
3.0
5.0
1.0
0
7.0
Figure 12. Receiver Input Characteristics
2.0
3.0
INPUT VOLTAGE (V)
4.0
5.0
Figure 13. Receiver Output Leakage
250
0.8
I
LEAKAGE CURRENT (nA)
INPUT CURRENT (mA)
TA = 0°C
R
0.4
TA = 70°C
0
– 0.4
TA = 25°C
– 0.8
VCC = 5.0 V
– 1.2
– 7.0
MC34050 only
Pin 4 = 2.0 V
200
150
Vo = 2.4 V
100
Vo = 0.4 V
50
0
– 5.0
– 3.0
– 1.0
1.0
INPUT VOLTAGE (V)
3.0
5.0
0
7.0
10°
Figure 14. Driver Output Voltage
70°
Figure 15. Driver Output Leakage
Vo = 2.7 V, VCC = 5.0 V, and
Vo = 6.0 V, VCC = 0.0 V
VOHD @ – 20 mA
60
LEAKAGE CURRENT
µA
nA
OUTPUT VOLTAGE CHANGE (mV)
60°
100
120
0
VOLD @ + 20 mA
– 60
– 120
50
0
10
20
30
40
50
TA, AMBIENT TEMPERATURE (°C)
60
70
Vo = 0.4 V, VCC = 5.0 V
Vo = – 0.25 V, VCC = 0.0 V
– 1.0
– 2.0
0
6
20°
30°
40°
50°
TA, AMBIENT TEMPERATURE (°C)
0
10
20
30
40
50
60
70
TA, AMBIENT TEMPERATURE (°C)
MOTOROLA ANALOG IC DEVICE DATA
MC34050 MC34051
Figure 16. EIA–422 Application
+
–
TTL
RT
+
D
TTL
–
TTL
+
+
+
TTL
–
–
TTL
–
MC34050/51
Figure 17. EIA–423 Application
RT
TTL
RT
+
+
–
–
TTL
TTL
D
+
+
–
–
MOTOROLA ANALOG IC DEVICE DATA
TTL
TTL
7
MC34050 MC34051
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC PACKAGE
CASE 751B–05
(SO–16)
ISSUE J
–A–
16
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.
9
–B–
1
P
8 PL
0.25 (0.010)
8
M
B
S
G
R
K
DIM
A
B
C
D
F
G
J
K
M
P
R
F
X 45 _
C
–T–
SEATING
PLANE
J
M
D
16 PL
0.25 (0.010)
M
T B
A
S
S
P SUFFIX
PLASTIC PACKAGE
CASE 648–08
ISSUE R
–A–
16
9
1
8
C
L
S
–T–
SEATING
PLANE
K
H
G
D
J
16 PL
0.25 (0.010)
M
T A
M
INCHES
MIN
MAX
0.386
0.393
0.150
0.157
0.054
0.068
0.014
0.019
0.016
0.049
0.050 BSC
0.008
0.009
0.004
0.009
0_
7_
0.229
0.244
0.010
0.019
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.
B
F
MILLIMETERS
MIN
MAX
9.80
10.00
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.19
0.25
0.10
0.25
0_
7_
5.80
6.20
0.25
0.50
M
DIM
A
B
C
D
F
G
H
J
K
L
M
S
INCHES
MIN
MAX
0.740
0.770
0.250
0.270
0.145
0.175
0.015
0.021
0.040
0.70
0.100 BSC
0.050 BSC
0.008
0.015
0.110
0.130
0.295
0.305
0_
10 _
0.020
0.040
MILLIMETERS
MIN
MAX
18.80
19.55
6.35
6.85
3.69
4.44
0.39
0.53
1.02
1.77
2.54 BSC
1.27 BSC
0.21
0.38
2.80
3.30
7.50
7.74
0_
10 _
0.51
1.01
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
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,
and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “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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against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
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8
◊
*MC34050/D*
MC34050/D
MOTOROLA ANALOG IC DEVICE
DATA