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參數(shù)資料
| 型號(hào)： | SP4082EEN-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS485/RS422 8NSOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 1/1 |
| 規(guī)程： | RS422/RS485 |
| 電源電壓： | 5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOICN |
| 包裝： | 帶卷 (TR) |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)6687000 Fax (50)668-707 www.exar.com
SP4082E_00_22007
4
ELECTRICAL CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAx
UNIT
Digital Input Signals: DI, DE, RE
Logic input thresholds
High, Vih
2.0
V
Low, Vil
0.8
Logic Input Current
Ta = 25°C, after first transition
±
μA
Input Hysteresis
Ta = 25°C
00
mV
Driver
Differential Driver Output (Vod)
No Load
Vcc
V
Differential Driver Output, Test
Rl=100Ω (RS-422)
2
Vcc
V
Rl=54Ω (RS-485)
.5
2.7
Vcc
Differential Driver Output, Test 2
Vcm = -7 to +2V
.5
Vcc
Change in Magnitude of Differential Output
Voltage (ΔVod) (Note )
Rl=54 or 100Ω
±0.2
V
Driver Common Mode Output Voltage (Voc)
Rl=54 or 100Ω
3
V
Change in Common Mode Output Voltage
(ΔVoc)
Rl=54 or 100Ω
±0.2
V
Driver Short Circuit Current Limit
-7V ≤ Vout ≤ +12V
±250
mA
Output Leakage Current
DE=0,
Vout=2V
25
μA
RE=0,
Vcc=0 or
5.5V
Vout= -7V
-00
Receiver
Receiver Input Resistance
-7V ≤ Vcm ≤ 12V
96
KΩ
Input Current (A, B pins)
DE=0,
RE=0,
Vcc=0 or
5.5V
Vin= 2V
25
Vin= -7V
-00
μA
Receiver Differential Threshold (VA-VB)
-7V ≤ Vcm ≤ 12V
-200
-25
-40
mV
Receiver Input Hysteresis
25
mV
Receiver
Output
Voltage
Voh
Iout = -8mA, Vid = -40mV
Vcc-.5
V
Vol
Iout = 8mA, Vid = -200mV
0.4
High-Z Receiver Output Current
Vcc =5.5V, 0 ≤ Vout ≤ Vcc
±
μA
Receiver Output Short Circuit Current
0V ≤ Vro ≤ Vcc
± 95
mA
Supply and Protection
Supply
Current
IQ, Active Mode
No load, DI=0 or Vcc
400
900
μA
Shutdown Mode, Note 2
DE=0, RE=Vcc, DI=Vcc
μA
Thermal Shutdown Temperature
Junction temperature
65
o
C
Thermal Shutdown Hysteresis
5
Notes:
. Change in Magnitude of Differential Output Voltage and Change in Magnitude of Common Mode Output Voltage are the changes in output voltage when DI input changes state.
2. The transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 50ns the device does not enter shutdown. If the enable inputs
are held in this state for at least 600ns the device is assured to be in shutdown. In this low power mode most circuitry is disabled and supply current is typically nA.
3.Characterized, not 00% tested.
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