參數(shù)資料
型號(hào)： SP334CT-L
廠商： Exar Corporation
文件頁(yè)數(shù)： 7/13頁(yè)
文件大小： 0K
描述： IC TXRX RS232/485 PROG 28WSOIC
標(biāo)準(zhǔn)包裝： 27
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 3/5
規(guī)程： RS232，RS485
電源電壓： 5V
安裝類型： 表面貼裝
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 28-SOIC W
包裝： 管件
其它名稱： 1016-1135-5
3
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP334_00_090909
SPECIFICATIONS
Limits are specifed at T
A = 25°C and VCC = +5.0V unless otherwise
PARAMETER
MIN.
TYP.
MAX.
UNITS CONDITIONS
RS-232 RECEIVER (continued)
AC Characteristics
Maximum Data Rate
20
235
kbps
Propagation Delay t
PHL
0.25
s
Measured from 50% of V
IN to .5V
of V
OUT
Propagation Delay t
PLH
0.25
s
RS-485 DRIVER
DC Characteristics
Open circuit Voltage
6.0
Volts
Differential Output
.5
5.0
Volts
R
L = 54, CL = 50pF
Balance
+/-0.2
Volts
|V
T| - |VT|
Common-Mode Output
3.0
Volts
Output Current
28.0
mA
R
L = 54
Short Circuit Current
+/-250
mA
Terminated in -7V to +0V
AC Characteristics
Maximum Data Rate
0
Mbps R
L = 54
Maximum Data Rate
8
Mbps R
L = 54, TA = +85°C, Note
Output Transition Time
30
ns
Rise/Fall time, 0%-90%
Propagation Delay t
PHL
80
20
ns
See Figures 3 & 5, R
DIFF = 54,
C
L = CL2 = 00pF
Propagation Delay t
PLH
80
20
ns
Driver Output Skew
5
20
ns
Per Figure 5, t
SKEW = |tDPHL - tDPLH|
RS-485 RECEIVER
DC Characteristics
Common Mode Range
-7.0
+2
Volts
Receiver Sensitivity
+/-0.2
Volts
-7V ≤ V
CM ≤ +12V
Input Impedance
2
5
k
-7V ≤ V
CM ≤ +12V
AC Characteristics
Maximum Data Rate
0
Mbps
Maximum Data Rate
8
Mbps T
A = +85°C, Note
Propagation Delay t
PHL
30
200
ns
See Figures 3 & 7, R
DIFF = 54,
C
L = CL2 = 00pF
Propagation Delay t
PLH
30
200
ns
Differential Receiver Skew
0
20
ns
t
SKEW = |tPHL - tPLH|, RDIFF = 54,
C
L = CL2 = 00pF, see Figure 8
ENABLE TIMING
RS-485 DRIVER
Enable Time
(see Figures 4 and 6)
Enable to LOW
00
50
ns
C
L = 5pF, S Closed
Enable to HIGH
00
50
ns
C
L = 5pF, S2 Closed
Note : Exceeding the maximum data rate of 8Mbps at T
A = 85°C may damage the device.
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