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參數(shù)資料
型號(hào)： SP339EER1-L
廠商： Exar Corporation
文件頁(yè)數(shù)： 21/23頁(yè)
文件大?。?/td> 0K
描述： IC TXRX RS232/485 TERM 40QFN
特色產(chǎn)品： SP339 Multiprotocol Transceiver
標(biāo)準(zhǔn)包裝： 490
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 3/5
規(guī)程： RS232，RS422，RS485
電源電壓： 3.3V，5V
安裝類型： 表面貼裝
封裝/外殼： 40-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 40-QFN（6x6）
包裝： 托盤
其它名稱： 1016-1704
SP339E
7
REV. 1.0.3
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
ELECTRICAL CHARACTERISTICS (Continued)
UNLESS OTHERWISE NOTED:
VCC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1 F; TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = +25°C.
SYMBOL
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
DIFFERENTIAL RECEIVER INPUTS (RS-485 / RS-422)
RIN
Receiver Input Resistance
96
k
TERM = 0V,
-7V
VIN +12V
VTH
Receiver Differential
Threshold Voltage
-200
-125
-50
mV
VTH
Receiver Input Hysteresis
25
mV
VCM = 0V
IIN
Receiver Input Current
125
A
VIN = +12V
-100
A
VIN = -7V
RTERM
Termination Resistance
100
120
155
TERM = VCC, Figure 5
-7V
VCM +12V
RTERM
Termination Resistance
100
120
140
TERM = VCC, Figure 5
VCM = 0V
DIFFERENTIAL DRIVER OUTPUTS (RS-485 / RS-422)
VOD
Differential Driver Output
2
VCC
V
RL = 100 (RS-422), Figure 6
1.5
VCC
V
RL = 54 (RS-485), Figure 6
1.5
VCC
V
-7V
VCM +12V, Figure 7
VCC
V
No Load
VOD
Change In Magnitude of
Differential Output Voltage
-0.2
+0.2
V
RL = 54 or 100 , Figure 6
VCM
Driver Common Mode Output Voltage
3
V
RL = 54 or 100 , Figure 6
VCM
Change In Magnitude of
Common Mode Output Voltage
0.2
V
RL = 54 or 100 , Figure 6
IOSD
Driver Output Short Circuit Current
-250
250
mA
-7V
VO +12V, Figure 8
IO
Driver Output Leakage Current
100
A
DIR1 = 0V in Mode 11,
or ENABLE = 0V,
VO +12V, VCC = 0V or 5.25V
-100
A
DIR1 = 0V in Mode 11,
or ENABLE = 0V,
VO -7V, VCC = 0V or 5.25V
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