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參數(shù)資料
| 型號： | SP320ACM-L |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 6/12頁 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 V.35 80LQFP |
| 標準包裝： | 84 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 7/7 |
| 規(guī)程： | RS232 |
| 電源電壓： | 5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 80-LQFP |
| 供應商設備封裝： | 80-LQFP（14x14） |
| 包裝： | 托盤 |
3
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50) 668-707 www.exar.com
SP320_00_092208
eLectricAL cHArActeristics
T
MIN to TMAX and Vcc = 5V +/-5% unless otherwise noted.
pArAMeter
Min.
tYp.
MAX.
Units conditions
rs-232 driVer
TTL Input Level V
IL
0.8
Volts
TTL Input Level V
IH
2.0
Volts
Voltage Outputs
High Level Output
+5.0
Volts
R
L = 3k to GND
Low Level Output
-5.0
Volts
R
L = 3k to GND
Open Circuit Voltage
-5.0
+5.0
Volts
R
L = ∞
Short Circuit Current
-00
+00
mA
R
L = GND
Power Off Impedance
300
Ohms
Vcc = 0V: V
OUT = +/-2V
AC Characteristics
Slew Rate
30
V/s
R
L = 3k, CL = 50pF; From +3V to
-3V or -3V to +3V, T
A = 25°C,
Vcc = +5V
Maximum Transmission Rate
20
kbps
R
L = 3k, CL = 2500pF
Transition Time
.56
s
Rise/fall time between +/-3V
R
L = 3k, CL = 2500pF
Propagation Delay t
PHL
2
8
s
R
L = 3k, CL = 2500pF; from .5V of
T
IN to 50% of VOUT
Propagation Delay t
PLH
2
8
s
R
L = 3k, CL = 2500pF; from .5V of
T
IN to 50% of VOUT
rs-232 receiVer
TTL Output level Low V
OL
0.4
Volts
TTL Output level High V
OH
2.4
Volts
Receiver Input
Input Voltage Range
-5
+5
Volts
High Threshold
.7
3.0
Volts
Low Threshold
0.8
.2
Volts
Hysteresis
0.2
0.5
.0
Volts
Vcc = 5V; T
A = 25°C
Receiver Input Circuit Bias
+2.0V
Volts
Input Impedance
3
5
7
kOhms V
IN = +/-5V
AC Characteristics
Maximum Transmission Rate
20
kbps
Propagation Delay t
PHL
0.
s
Measured from 50% of R
IN to .5V
of R
OUT
Propagation Delay t
PLH
0.
s
Measured from 50% of R
IN to .5V
of R
OUT
power reqUireMents
No Load Vcc Supply Current
35
70
mA
No Load; Vcc = 5.0V; T
A = 25°C
Full Load Vcc Supply Current
60
mA
RS-232 Drivers R
L = 3k to GND;
DC Input
V.35 Drivers R
L = 100 from A to B;
DC input
Shutdown Current
.5
mA
TS000 = ENV35 = 0V
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