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PDF MC75174B Data sheet ( Hoja de datos )
| Número de pieza | MC75174B | |
| Descripción | (MC75172B / MC75174B) Quad EIA-485 Line Drivers | |
| Fabricantes | ON Semiconductor | |
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MC75172B, MC75174B
Quad EIA−485 Line Drivers
with Three−State Outputs
The ON Semiconductor 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 PDIP and 20−pin wide
body surface mount packages.
Features
• 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: −7.0 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 mA96172/4
• Interchangeable with MC3487 and AM26LS31 for EIA−422−A
Applications
• Pb−Free Packages are Available*
MAXIMUM RATING
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 3−State Vza −10, +14 Vdc
Condition (VCC = 5.0 V)
Applied Output Voltage, when VCC = 0 V
Vzb
±14 Vdc
Output Current
IO Self−Limiting −
Storage Temperature
Tstg −65, +150 °C
Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
1. Devices should not be operated at these limits. The “Recommended Operating
Conditions” table provides for actual device operation.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 4
1
http://onsemi.com
QUAD EIA−485 LINE DRIVERS
SOIC−20 WB
DW SUFFIX
CASE 751D
1
PDIP−16
P SUFFIX
CASE 648
1
MARKING DIAGRAMS
20
MC17517xBDW
AWLYYWWG
1
16
MC75174BP
AWLYYWWG
1
x = 2 or 4
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Publication Order Number:
MC75172B/D
1 page  
0 or 3.0 V
Vin 3.0 V
S.G.
VCC
MC75172B, MC75174B
50 pF
Vin
Vout
110W
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
110W
50 pF
Vin
Vout
1.5 V
tPZL(E)
Vout
2.3 V
Figure 5. Enable Timing, Single−Ended Outputs
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
Vin
54 50 pF VOD
1.5 V
tPZD(E)
VOD
0
1.5 V
Disabled
Active
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 6. Enable Timing, Differential Outputs
3.0 V
1.5 V
tPDZ(E)
0V
1.5 V
Disabled
0
http://onsemi.com
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)
Open Circuit Voltage
Differential
Single−Ended
Loaded Differential Voltage
Zout
VOCD
VOCS
VOD
Not Specified
1.5 to 6.0 V
t 6.0 V
1.5 to 5.0 V, w/54 W load
t 100 W
p 6.0 V
p 6.0 V
q 2.0 V or q 0.5 VOCD,
w/100 W load
50 10 100 W
p 6.0 V, w/3.9 kW, Load
p 6.0 V, w/3.9 kW, Load
q 2.0 V or q 0.5 VOCD,
w/100 W load
Differential Voltage Balance
Output Common Mode Range
Offset Voltage
Offset Voltage Balance
Short Circuit Current
Leakage Current (VCC = 0)
DVOD
VCM
VOS
DVOS
IOS
IOLK
t 200 mV
−7.0 to +12 V
−1.0 t VOS t 3.0 V
t 200 mV
p 250 mA for −7.0 to 12 V
Not Specified
p 400 mV
Not Specified
p 3.0 V
p 400 mV
p 150 mA to ground
p 100 mA to −0.25 V thru
6.0 V
t 400 mV
Not Specified
p 3.0 V
t 400 mV
p 150 mA to ground
p 100 mA to ± 0.25 V
Output Rise/Fall Time (Note 2) tr, tf p 0.3 TB, w/54 W/1150 pF p 0.1 TB or p 20 ns, w/100 p 0.1 TB or p 20 ns, w/100
load
W load
W load
RECEIVER
Input Sensitivity
Vth ± 200 mV
± 200 mV
± 300 mV
Input Bias Voltage
Vbias
p 3.0 V
p 3.0 V
p 3.0 V
Input Common Mode Range
Vcm
−7.0 to 12 V
−7.0 to 7.0 V
−7.0 to 7.0 V
Dynamic Input Impedance
Rin Spec number of U.L.
q 4 kW
q 4 kW
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).
ORDERING INFORMATION
Device
Operating Temperature Range
Package
Shipping†
MC75172BDW
MC75172BDWG
SOIC−20WB
SOIC−20WB
(Pb−Free)
38 Units / Rail
MC75172BDWR2
MC75172BDWR2G
SOIC−20WB
SOIC−20WB
(Pb−Free)
1000 / Tape & Reel
MC75174BDW
MC75174BDWG
TA = − 40° to +85°C
SOIC−20WB
SOIC−20WB
(Pb−Free)
38 Units / Rail
MC75174BDWR2
MC75174BDWR2G
SOIC−20WB
SOIC−20WB
(Pb−Free)
1000 / Tape & Reel
MC75174BP
MC75174BPG
PDIP−16
PDIP−16
(Pb−Free)
25 Units / Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
http://onsemi.com
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MC75174B.PDF ] | |
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