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SP332 датащи(PDF) 3 Page - Exar Corporation

номер детали SP332
подробное описание детали  RS-232/RS-485 Multi-mode SerialTransceiver
PDF  11 Pages
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производитель  EXAR [Exar Corporation]
домашняя страница  http://www.exar.com
Logo EXAR - Exar Corporation

SP332 датащи(HTML) 3 Page - Exar Corporation

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP332_00_0260
PARAMETER
MIN.
TYP.
MAX.
UNITS CONDITIONS
RS-485 DRIVER (Continued)
AC Characteristics
Driver Skew
5
0
ns
From Output to Output; See Figures
3 and 5
Driver Rise or Fall Time
3
5
40
ns
From 0% to 90%; R
DIFF = 54Ω, CL
= C
L2 = 100pF; See Figures 3 and 5
RS-485 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
+0.2
Volts
-7V ≤ V
CM ≤ 12V
Input Hysteresis
70
mV
V
CM = 0V
Output Voltage HIGH
3.5
Volts
I
O = -4mA, VID = +200mV
Output Voltage LOW
0.4
Volts
I
O = +4mA, VID = -200mV
Input Resistance
2
5
kΩ
-7V ≤ V
CM ≤ 12V
Input Current (A, B); V
IN = 2V
.5
mA
V
IN = 12V, A is the non-inverting
receiver input. B is the inverting
receiver input
Input Current (A, B); V
IN = -7V
-0.8
mA
V
IN = -7V
Short Circuit Current
85
mA
0V ≤ V
CM ≤ VCC
AC Characteristics
Receiver Data Rate
0
Mbps
Receiver Data Rate
8
Mbps
T
A = +85°C, Note 
Receiver Input to Output t
PLH
30
250
ns
R
DIFF = 54Ω, CL = CL2 = 00pF;
Figures 3 and 6
Receiver Input to Output t
PHL
30
250
ns
R
DIFF = 54Ω, CL = CL2 = 00pF;
Figures 3 and 6
Differential Receiver Skew
|t
PHL - tPLH|
3
ns
R
DIFF = 54Ω, CL = CL2 = 00pF;
Figures 3 and 6
RS-232 DRIVER
DC Characteristics
TTL Input Level V
IL
0.8
Volts
Applies to transmitter inputs, SEL A,
SEL B, SD and LB
TTL Input Level V
IH
2.0
Volts
Applies to transmitter inputs, SEL A,
SEL B, SD and LB
High Level Voltage Output
+5.0
+5.0
Volts
R
L = 3kΩ to GND
Low Level Voltage Output
-5.0
-5.0
Volts
R
L = 3kΩ to GND
Open Circuit Output
+/-5
Volts
R
L = ∞
Short Circuit Current
+/-00
mA
V
OUT = 0V
Power Off Impedance
300
Ω
V
CC = 0V; VOUT = +/-2V
AC Characteristics
Transmission Rate
20
kbps
Transition Time
.56
µs
Rise/Fall time, +3V to -3V; -3V to
+3V, R
L = 3kΩ, CL = 2500pF
SPECIFICATIONS (continued)
Limits are specified at T
A = 25°C and VCC = +5.0V unless otherwise noted.



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