Device
Operating
Temperature Range
Package
MC75172B
MC75174B
SEMICONDUCTOR
TECHNICAL DATA
QUAD EIA485 LINE DRIVERS
ORDERING INFORMATION
MC75172BDW
TA = 40
°
to +85
°
C
SO20L
Order this document by MC75172B/D
P SUFFIX
PLASTIC PACKAGE
CASE 648
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO20L)
MC75174BDW
SO20L
MC75174BP
Plastic DIP
1
MOTOROLA ANALOG IC DEVICE DATA
Quad EIA-485 Line Drivers
with Three-State Outputs
The Motorola MC75172B/174B Quad Line drivers are differential high
speed drivers designed to comply with the EIA485 Standard. Features
include threestate outputs, thermal shutdown, and output current limiting in
both directions. These devices also comply with EIA422A, and CCITT
Recommendations V.11 and X.27.
The MC75172B/174B are optimized for balanced multipoint bus
transmission at rates in excess of 10 MBPS. The outputs feature wide
common mode voltage range, making them suitable for party line
applications in noisy environments. The current limit and thermal shutdown
features protect the devices from line fault conditions. These devices offer
optimum performance when used with the MC75173 and MC75175 line
receivers.
Both devices are available in 16pin plastic DIP and 20pin wide body
surface mount packages.
·
Meets EIA485 Standard for Party Line Operation
·
Meets EIA422A and CCITT Recommendations V.11 and X.27
·
Operating Ambient Temperature: 40
°
C to +85
°
C
·
High Impedance Outputs
·
Common Mode Output Voltage Range: 7 to 12 V
·
Positive and Negative Current Limiting
·
Transmission Rates in Excess of 10 MBPS
·
Thermal Shutdown at 150
°
C Junction Temperature, (
±
20
°
C)
·
Single 5.0 V Supply
·
Pin Compatible with TI SN75172/4 and NS
µ
A96172/4
·
Interchangeable with MC3487 and AM26LS31 for EIA422A
Applications
PIN CONNECTIONS
MC75172B
MC75174B
9
1
3A
3Y
3Z
En
12
4Z
4Y
4A
VCC
Gnd
2A
2Y
2Z
En
12
1Z
1A
1Y
P Package
2
3
4
5
6
7
8
16
15
14
13
12
11
DW Package
2A
8
7
6
5
4
4A
VCC
19
18
En
2Z
NC
10
11
9
9
10
11
12
13
14
15
16
8
7
6
5
4
3
2
P Package
1
3
En
17
4Y
Gnd
2Y
12
3A
14 3Z
4Z
15
16
1A
1Y 2
1Z
NC
NC
NC
3Y
13
20
1Y
1A
1Z
En
2Z
2Y
2A
Gnd
VCC
En
34
En
34
20
13
3Y
NC
NC
NC
1Z
2
1Y
1A
16
15
4Z
3Z
14
12
2Y
Gnd
4Y
17
9
2A
8
7
6
5
4
4A
VCC
19
18
DW Package
2Z
NC
10
11
4A
4Y
4Z
En
3Z
3Y
3A
1
3
1
10
3A
©
Motorola, Inc. 1996
Rev 1
MC75172B MC75174B
2
MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
VCC
0.5, +7.0
Vdc
Input Voltage (Data, Enable)
Vin
+7.0
Vdc
Input Current (Data, Enable)
Iin
24
mA
Applied Output Voltage, when in 3State Condition
(VCC = 5.0 V)
Vza
10, +14
Vdc
Applied Output Voltage, when VCC = 0 V
Vzb
±
14
Output Current
IO
SelfLimiting
Storage Temperature
Tstg
65, +150
°
C
Devices should not be operated at these limits. The "Recommended Operating Conditions" table provides
for actual device operation.
RECOMMENDED OPERATING CONDITIONS
Characteristic
Symbol
Min
Typ
Max
Unit
Power Supply Voltage
VCC
+4.75
+5.0
+5.25
Vdc
Input Voltage (All Inputs)
Vin
0
VCC
Vdc
Output Voltage in 3State Condition, or when VCC = 0 V
Vcm
7.0
+12
Vdc
Output Current (Normal data transmission)
IO
65
+65
mA
Operating Ambient Temperature (see text)
EIA485
EIA422
TA
40
0
+85
+85
°
C
All limits are not necessarily functional concurrently.
ELECTRICAL CHARACTERISTICS
(40
°
C
p
TA
p
85
°
C, 4.75 V
p
VCC
p
5.25 V, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage
SingleEnded Voltage
IO = 0
High @ IO = 33 mA
Low @ IO = +33 mA
Differential Voltage
Open Circuit (IO = 0)
RL = 54
(Figure 1)
VO
VOH
VOL
VOD1
VOD2
0
1.5
1.5
4.0
1.6
3.4
2.3
6.0
6.0
5.0
Vdc
Change in Differential*, RL = 54
(Figure 1)
Differential Voltage, RL = 100
(Figure 1)
Change in Differential*, RL = 100
(Figure 1)
Differential Voltage, 7.0 V
p
Vcm
p
12 V (Figure 2)
Change in Differential*, 7.0 V
p
Vcm
p
12 V (Figure 2)
Offset Voltage, RL = 54
(Figure 1)
Change in Offset*, RL = 54
(Figure 1)
VOD2
VOD2A
VOD2A
VOD3
VOD3
VOS
VOS
1.5
5.0
2.2
5.0
5.0
2.9
5.0
200
200
5.0
200
200
mVdc
Vdc
mVdc
Vdc
mVdc
Vdc
mVdc
Output Current (Each Output)
Power Off Leakage, VCC = 0, 7.0 V
p
VO
p
12 V
Leakage in 3State Mode, 7.0 V
p
VO
p
12 V
IO(off)
IOZ
50
50
0
0
+50
+50
µ
A
Short Circuit Current to Ground
Short Circuit Current, 7.0 V
p
VO
p
12 V
IOSR
IOS
150
250
+150
+250
mA
*Vin switched from 0.8 to 2.0 V.
Typical values determined at 25
°
C ambient and 5.0 V supply.
MC75172B MC75174B
3
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS
(40
°
C
p
TA
p
85
°
C, 4.75 V
p
VCC
p
5.25 V, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Inputs
Low Level Voltage (Pins 4 & 12, MC75174B only)
Low Level Voltage (All Other Pins)
High Level Voltage (All Inputs)
VIL(A)
VIL(B)
VIH
0
0
2.0
0.7
0.8
VCC
Vdc
Current @ Vin = 2.7 V (All Inputs)
Current @ Vin = 0.5 V (All Inputs)
IIH
IIL
100
0.2
15
20
µ
A
Clamp Voltage (All Inputs, Iin = 18 mA)
VIK
1.5
Vdc
Thermal Shutdown Junction Temperature
Tjts
+150
°
C
Power Supply Current (Outputs Open, VCC = 5.25 V)
Outputs Enable
Outputs Disabled
ICC
60
30
70
40
mA
TIMING CHARACTERISTICS
(TA = 25
°
C, VCC = 5.0 V)
Characteristics
Symbol
Min
Typ
Max
Unit
Propagation Delay Input to Singleended Output (Figure 3)
Output LowtoHigh
Output HightoLow
tPLH
tPHL
23
18
30
30
ns
Propagation Delay Input to Differential Output (Figure 4)
Input LowtoHigh
Input HightoLow
tPLH(D)
tPHL(D)
15
17
25
25
ns
Differential Output Transition Time (Figure 4)
tdr, tdf
19
25
ns
Skew Timing
tPLHD tPHLD
for Each Driver
Max Min tPLHD Within a Package
Max Min tPHLD Within a Package
tSK1
tSK2
tSK3
0.2
1.5
1.5
ns
Enable Timing
Singleended Outputs (Figure 5)
Enable to Active High Output
Enable to Active Low Output
Active High to Disable (using Enable)
Active Low to Disable (using Enable)
Enable to Active High Output (MC75172B only)
Enable to Active Low Output (MC75172B only)
Active High to Disable (using Enable, MC75172B only)
Active Low to Disable (using Enable, MC75172B only)
tPZH(E)
tPZL(E)
tPHZ(E)
tPLZ(E)
tPZH(E)
tPZL(E)
tPHZ(E)
tPLZ(E)
48
20
35
30
58
28
38
36
60
30
45
50
70
35
50
50
ns
Differential Outputs (Figure 6)
Enable to Active Output
Enable to Active Output (MC75172B only)
Enable to 3State Output
Enable to 3State Output (MC75172B only)
tPZD(E)
tPZD(E)
tPDZ(E)
tPDZ(E)
47
56
32
40
ns
MC75172B MC75174B
4
MOTOROLA ANALOG IC DEVICE DATA
tdf
1.5 V
50%
tPHLD
3.0 V
tPLH
VOD
54
50 pF
Vin
VCC
VOD
VOD2,A
1.5 V
50%
1.5 V
[
4.6 V
tdr
S.G.
0 V
3.0 V
1.5 V
tPLHD
1.5 V
Vin
VCC
VOH
15 pF
Vin
Z
VCC
Vin
tPHL
(0.8 or 2.0 V)
VOS
(0.8 or 2.0 V)
RL/2
RL/2
VCC
Output Y
+
375
58
375
VOD3
VCM = 12 to 7.0 V
Y
Output
27
2.3 V
S.G.
Vin
3.0 V
3.0 V
tPLH
1.5 V
Output Z
Vin
VOL
0 V
3.0 V
1.5 V
tPHL
3.0 V
1.5 V
NOTES: 1. S.G. set to: f
p
1.0 MHz; duty cycle = 50%; tr, tf,
p
5.0 ns.
2. tSK1 =
tPLHD tPHLD
for each driver.
3. tSK2 computed by subtracting the shortest tPLHD from the longest tPLHD of the 4 drivers within a package.
4. tSK3 computed by subtracting the shortest tPHLD from the longest tPHLD of the 4 drivers within a package.
Figure 1. VDD Measurement
Figure 2. Common Mode Test
Figure 3. Propagation Delay, SingleEnded Outputs
Figure 4. Propagation Delay, Differential Outputs
MC75172B MC75174B
5
MOTOROLA ANALOG IC DEVICE DATA
tPZL(E)
1.5 V
Vout
2.3 V
1.5 V
VOL
0.5 V
tPLZ(E)
0 V
3.0 V
VCC
Vout
Vin
50 pF
110
Vout
S.G.
Vin
Vout
110
50 pF
VCC
VCC
0.5 V
VOH
0 V
tPHZ(E)
1.5 V
3.0 V
Vin
1.5 V
Vin
S.G.
2.3 V
0 or 3.0 V
3.0 V
3.0 V
0 or 3.0 V
tPZH(E)
tPDZ(E)
1.5 V
0
0 V
3.0 V
1.5 V
Active
tPZD(E)
S.G.
1.5 V
VOD
Disabled
VCC
Vin
0 or 3.0 V
3.0 V
VOD
50 pF
54
1.5 V
0
Vin
Disabled
NOTES: 1. S.G. set to: f
p
1.0 MHz; duty cycle = 50%; tf, tf,
p
5.0 ns.
2. Vin is inverted for Enable measurements.
Figure 5. Enable Timing, SingleEnded Outputs
Figure 6. Enable Timing, Differential Outputs