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PDF MC75174B Data sheet ( Hoja de datos )
| Número de pieza | MC75174B | |
| Descripción | (MC75172B / MC75174B) QUAD EIA-485 LINE DRIVERS | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Order this document by MC75172B/D
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 EIA–485 Standard. Features
include three–state outputs, thermal shutdown, and output current limiting in
both directions. These devices also comply with EIA–422–A, 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 16–pin plastic DIP and 20–pin wide body
surface mount packages.
• Meets EIA–485 Standard for Party Line Operation
• Meets EIA–422–A 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, (±ā20°C)
• Single 5.0 V Supply
• Pin Compatible with TI SN75172/4 and NS µA96172/4
• Interchangeable with MC3487 and AM26LS31 for EIA–422–A
Applications
MC75172B
MC75174B
QUAD EIA–485 LINE DRIVERS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 648
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC75172BDW
SO–20L
MC75174BDW TA = – 40° to +85°C SO–20L
MC75174BP
Plastic DIP
MC75172B
PIN CONNECTIONS
MC75174B
1A 1
1Y 2
1Z 3
En 4
2Z 5
2Y 6
2A 7
Gnd 8
P Package
16 VCC 1A 1
15 4A 1Y 2
14 4Y NC 3
13 4Z 1Z 4
12 En
11 3Z
10 3Y
9 3A
En 5
2Z 6
NC 7
2Y 8
2A 9
Gnd 10
DW Package
20 VCC 1A 1
19 4A
18 4Y
17 NC
16 4Z
15 En
14 3Z
13 NC
12 3Y
1Y 2
1Z 3
En 4
12
2Z 5
2Y 6
2A 7
Gnd 8
11 3A
P Package
16 VCC 1A 1
15 4A 1Y 2
14 4Y NC 3
13 4Z
12 En
34
11 3Z
10 3Y
9 3A
1Z 4
En 5
12
2Z 6
NC 7
2Y 8
2A 9
Gnd 10
DW Package
20 VCC
19 4A
18 4Y
17 NC
16 4Z
15 En
34
14 3Z
13 NC
12 3Y
11 3A
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 1
1
1 page  
0 or 3.0 V
Vin 3.0 V
S.G.
VCC
MC75172B MC75174B
Figure 5. Enable Timing, Single–Ended Outputs
50 pF
Vin
Vout
110Ω
1.5 V
tPZH(E)
Vout 2.3 V
3.0 V
1.5 V
tPHZ(E)
0V
VOH
0.5 V
0 or 3.0 V
Vin 3.0 V
S.G.
VCC
VCC
110Ω
50 pF
Vin
Vout
1.5 V
tPZL(E)
Vout
2.3 V
3.0 V
1.5 V
tPLZ(E)
0V
0.5 V
VOL
0 or 3.0 V
Vin 3.0 V
S.G.
VCC
Figure 6. Enable Timing, Differential Outputs
Vin
54 50 pF VOD
1.5 V
tPZD(E)
3.0 V
1.5 V
tPDZ(E)
0V
VOD
0
1.5 V
Disabled
Active
1.5 V
Disabled
0
p pNOTES: 1. S.G. set to: f 1.0 MHz; duty cycle = 50%; tf, tf, 5.0 ns.
2. Vin is inverted for Enable measurements.
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page 
MC75172B MC75174B
Comparing System Requirements
Characteristic
Symbol
EIA–485
EIA–422–A
V.11 and X.27
GENERATOR (DRIVER)
Output Impedance (Note 1)
Zout
Not Specified
t 100 Ω
50 10 100 Ω
Open Circuit Voltage
Differential
Single–Ended
Loaded Differential Voltage
Differential Voltage Balance
VOCD
VOCS
VOD
∆VOD
t1.5 to 6.0 V
6.0 V
1.5 to 5.0 V, w/54 Ω load
t 200 mV
p 6.0 V
p 6.0 V
q q2.0 V or 0.5
VOCD, w/100 Ω load
p 400 mV
p 6.0 V, w/3.9 kΩ, Load
p 6.0 V, w/3.9 kΩ, Load
q q2.0 V or 0.5 VOCD,
w/100 Ω load
t 400 mV
Output Common Mode Range
Offset Voltage
Offset Voltage Balance
Short Circuit Current
Leakage Current (VCC = 0)
Output Rise/Fall Time (Note 2)
VCM
VOS
∆VOS
IOS
IOLK
tr, tf
–7.0 to +12 V
t t–1.0 VOS 3.0 V
t 200 mV
p 250 mA for –7.0 to
12 V
Not Specified
p 0.3 TB, w/54 Ω/1150 pF
load
Not Specified
p 3.0 V
p 400 mV
p 150 mA to ground
p 100 µA to –0.25 V
thru 6.0 V
p p0.1 TB or 20 ns,
w/100 Ω load
Not Specified
p 3.0 V
t 400 mV
p 150 mA to ground
p 100 µA to ± 0.25 V
p p0.1 TB or 20 ns,
w/100 Ω load
RECEIVER
Input Sensitivity
Input Bias Voltage
Vth
Vbias
± 200 mV
p 3.0 V
± 200 mV
p 3.0 V
± 300 mV
p 3.0 V
Input Common Mode Range
Dynamic Input Impedance
Vcm
Rin
–7.0 to 12 V
Spec number of U.L.
–7.0 to 7.0 V
q 4 kΩ
–7.0 to 7.0 V
q 4 kΩ
NOTES: 1. Compliance with V.11 and X.27 (Blue book) output impedance requires external resistors in series with the outputs of the MC75172B and MC75174B.
2. TB = Bit time.
Additional Information
Copies of the EIA Recommendations (EIA–485 and EIA–422–A) can be obtained from the Electronics Industries Association,
Washington, D.C. (202–457–4966). Copies of the CCITT Recommendations (V.11 and X.27) can be obtained from the United
States Department of Commerce, Springfield, VA (703–487–4600).
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MC75174B.PDF ] | |
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