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| 型号： | SP334ET-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232/485 PROG 28WSOIC |
| 标准包装： | 1,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 规程： | RS232，RS485 |
| 电源电压： | 5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 带卷 (TR) |
2
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP334_00_090909
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability.
V
CC.......................................................................+7V
Input Voltages
Logic............................-0.5V to (Vcc+0.5V)
Drivers.........................-0.5V to (Vcc+0.5V)
Receivers......................+/-30V @ ≤100mA
Driver Outputs..................................................+/-5V
Maximum Data Rate...........................8Mbps (note )
SPECIFICATIONS
Limits are specified at T
A = 25°C and VCC = +5.0V unless otherwise noted.
PARAMETER
MIN.
TYP.
MAX.
UNITS CONDITIONS
Logic Inputs
V
IL
0.8
Volts
V
IH
2.0
Volts
LOGIC OUTPUTS
V
OL
0.4
Volts
I
OUT = -3.2mA
V
OH
2.4
Volts
I
OUT = .0mA
Output Tri-state Leakage
0
A
0.4V ≤ V
OUT ≤ +2.4V
RS-232 DRIVER
DC Characteristics
HIGH Level Output
+5.0
Volts
R
L = 3k, VIN = 0.8V
LOW Level Output
-5.0
Volts
R
L = 3k, VIN = 2.0V
Open Circuit Voltage
-5
+5
Volts
Short Circuit Current
+/-00
mA
V
OUT = 0V
Power Off Impedance
300
V
CC = 0V, VOUT = +/-2.0V
AC Characteristics
Slew Rate
30
V/s
R
L = 3k, CL = 50pF; VCC = +5.0V,
T
A @ 25°C
Transistion Time
.56
s
R
L = 3K, CL = 2500pF;
between +/-3V, T
A @ +25°C
Maximum Data Rate
20
235
kbps
R
L = 3k, CL = 2500pF
Propagation Delay t
PHL
2
8
s
Measured from .5V of V
IN to 50%
of V
OUT; RL = 3k
Propagation Delay t
PLH
2
8
s
RS-232 RECEIVER
DC Characteristics
HIGH Threshold
.7
3.0
Volts
LOW Threshold
0.8
.2
Volts
Receiver Open Circuit Bias
+2.0
Volts
Input Impedance
3
5
7
k
V
IN = +5V to -5V
Storage Temperature.......................-65C to +150C
Power Dissipation
28-pin WSOIC...................................000mW
Package Derating:
28-pin WSOIC
JA................................................40 °C/W
Note : Exceeding the maximum data rate of 8Mbps at T
A = 85°C may permanently damage the device
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