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MC74172BのメーカーはON Semiconductorです、この部品の機能は「Quad EIA-485 Line Drivers」です。 |
部品番号 | MC74172B |
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部品説明 | Quad EIA-485 Line Drivers | ||
メーカ | ON Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとMC74172Bダウンロード(pdfファイル)リンクがあります。 Total 14 pages
ON Semiconductort
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 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, (±20°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
w These devices are available in Pb−free package(s). Specifications herein
apply to both standard and Pb−free devices. Please see our website at
www.onsemi.com for specific Pb−free orderable part numbers, or contact
your local ON Semiconductor sales office or representative.
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
© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 3
1
Publication Order Number:
MC75172B/D
1 Page MC75172B MC75174B
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
Output Voltage
Single−Ended Voltage
IO = 0
High @ IO = −33 mA
Low @ IO = +33 mA
Differential Voltage
Open Circuit (IO = 0)
RL = 54 Ω (Figure 1)
Change in Differential*, RL = 54 Ω (Figure 1)
Differential Voltage, RL = 100 Ω (Figure 1)
Change in Differential*, RL = 100 Ω (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 Ω (Figure 1)
Change in Offset*, RL = 54 Ω (Figure 1)
Output Current (Each Output)
Power Off Leakage, VCC = 0, −7.0 V p VO p 12 V
Leakage in 3−State Mode, −7.0 V p VO p 12 V
VO
VOH
VOL
⎥ VOD1 ⎜
⎥ VOD2 ⎜
⎥ ΔVOD2 ⎜
⎥ VOD2A ⎜
⎥ ΔVOD2A ⎜
⎥ VOD3 ⎜
⎥ ΔVOD3 ⎜
VOS
⎥ ΔVOS ⎜
IO(off)
IOZ
0
−
−
1.5
1.5
−
−
−
1.5
−
−
−
−50
−50
−
4.0
1.6
3.4
2.3
5.0
2.2
5.0
−
5.0
2.9
5.0
0
0
Short Circuit Current to Ground
Short Circuit Current, −7.0 V p VO p 12 V
IOSR
IOS
−150
−250
−
−
*Vin switched from 0.8 to 2.0 V.
Typical values determined at 25°C ambient and 5.0 V supply.
Max
6.0
−
−
6.0
5.0
200
−
200
5.0
200
−
200
+50
+50
+150
+250
Unit
Vdc
mVdc
Vdc
mVdc
Vdc
mVdc
Vdc
mVdc
μA
mA
http://onsemi.com
3
3Pages 0 or 3.0 V
Vin 3.0 V
S.G.
VCC
MC75172B MC75174B
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
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
3.0 V
1.5 V
tPDZ(E)
0V
Active
1.5 V
Disabled
0
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
http://onsemi.com
6
6 Page | |||
ページ | 合計 : 14 ページ | ||
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部品番号 | 部品説明 | メーカ |
MC74172B | Quad EIA-485 Line Drivers | ON Semiconductor |