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参数资料
| 型号： | SP3249ECY-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 INTELLIGNT 24TSSOP |
| 产品变化通告： | Packaging Change 15/Jul/2010 |
| 标准包装： | 1,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 5/3 |
| 规程： | RS232 |
| 电源电压： | 3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 带卷 (TR) |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 510-668-7017 www.exar.com
SP3249E_100_013111
3
ELECTRICAL CHARACTERISTICS
PARAMETER
MIN.
TYP. MAX. UNITS CONDITIONS
DRIVER OUTPUTS (continued)
Output Resistance
300
V
CC = V+ = V- = 0V, VOUT=+2V
Output Short-Circuit Current
+35
+60
mA
V
OUT = GND
RECEIVER INPUTS
Input Voltage Range
-25
25
V
Input Threshold LOW
0.6
1.2
V
Vcc = 3.3V
Input Threshold LOW
0.8
1.5
V
Vcc = 5.0V
Input Threshold HIGH
1.5
2.4
V
Vcc = 3.3V
Input Threshold HIGH
1.8
2.4
V
Vcc = 5.0V
Input Hysteresis
0.5
V
Input Resistance
3
5
7
k
TIMING CHARACTERISTICS
Maximum Data Rate
250
kbps
R
L = 3K, CL = 1000pF, one
driver switching
Receiver Propagation Delay
t
PHL
t
PLH
0.15
s
Receiver input to Receiver
output, C
L = 150pF
Receiver Output Enable Time
200
ns
Normal operation
Receiver Output Disable Time
200
ns
Normal operation
Driver Skew
100
ns
| t
PHL - tPLH |, TAMB = 25°C
Receiver Skew
50
ns
| t
PHL - tPLH |
Transition-Region Slew Rate
30
V/s
Vcc = 3.3V, R
L = 3k, TAMB =
25°C, measurements taken from
-3.0V to +3.0V or +3.0V to -3.0V
V
CC = +3.0V to +5.5V, C1 - C4 = 0.1F (tested at 3.3V +/-5%), C1 - C4 = 0.22F (tested at 3.3V +/-10%),
C1 = 0.047F and C2 - C4 = 0.33F (tested at 5.0V +/-10%), T
AMB = TMIN to TMAX, unless otherwise noted. Typical
values are at T
A = 25°C
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