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| 型号： | LT1331CSW#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 5V/3V RS232 28-SOIC |
| 标准包装： | 1,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 规程： | RS232 |
| 电源电压： | 3.3 V，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 |
| 包装： | 带卷 (TR) |
3
LT1331
ELECTRICAL C
C
HARA TERISTICS
The q denotes specifications which apply over the full operating
temperature range (0
°C ≤ TA ≤ 70°C for commercial grade).
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Testing done at VCC = 5V, VL = 3.3V, and VON/OFF = 3V, unless
otherwise stated.
Note 3: Supply current is measured as the average over several charge
pump cycles. C + = 1
F, C– = 0.1F, C1 = C2 = 0.2F. All outputs are open
with all driver inputs tied high.
Note 4: VL supply current is measured with all receiver outputs high.
Note 5: Supply current and leakage current measurements in shutdown
are performed with VON/OFF ≤ 0.1V. Supply current measurements using
driver disable are performed with VDRIVER DISABLE ≥ 3V.
Note 6: For driver delay measurements, RL = 3k and CL = 51pF. Trigger
points are set between the driver’s input logic threshold and the output
transition to the zero crossing (t HL = 1.4V to 0V and tLH = 1.4V to 0V).
Note 7: For receiver delay measurements, CL = 51pF. Trigger points are
set between the receiver’s input logic threshold and the output transition
to standard TTL/CMOS logic threshold (t HL = 1.3V to 2.0V and tLH = 1.7V
to 0.8V).
Note 8: Data rate operation guaranteed by slew rate, short-circuit current
and propagation delay tests.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Any Driver
Output Voltage Swing, Positive
VCC = 5V, RL = 3k
q
5.0
6.5
V
VCC = 3.3V, RL = 3k
3.7
4.0
V
Output Voltage Swing, Negative
VCC = 5V, RL = 3k
q
– 6.0
– 5.0
V
VCC = 3.3V, RL = 3k
– 3.3
– 2.7
V
Logic Input Voltage Level
Input Low Level (VOUT = High)
q
1.4
0.8
V
Input High Level (VOUT = Low)
q
2.0
1.4
V
Logic Input Current
0.8V
≤ VIN ≤ 2V
q
520
A
Output Short-Circuit Current
VOUT = 0V
±917
mA
Output Leakage Current
Shutdown VOUT = ±30V (Note 5)
q
10
100
A
Data Rate (Note 8)
RL = 3k, CL = 2500pF
120
kBaud
RL = 3k, CL = 1000pF
250
kBaud
Slew Rate
RL = 3k, CL = 51pF
15
30
V/
s
RL = 3k, CL = 2500pF
6
V/
s
Propagation Delay
Output Transition tHL High to Low (Note 6)
0.6
1.3
s
Output Transition tLH Low to High
0.5
1.3
s
Any Receiver
Input Voltage Thresholds
Input Low Threshold (VOUT = High)
q
0.8
1.3
V
Input High Threshold (VOUT = Low)
q
1.7
2.4
V
Hysteresis
q
0.1
0.4
1.0
V
Input Resistance
VIN = ±10V
3
5
7
k
Receivers 1 Through 4
Output Voltage
Output Low, IOUT = – 1.6mA
q
0.2
0.4
V
Output High, IOUT = 160A (VL = 3.3V)
q
2.0
2.4
V
Output Short-Circuit Current
Sinking Current, VOUT = VCC
–20
– 10
mA
Sourcing Current, VOUT = 0V
10
20
mA
Propagation Delay
Output Transition tHL High to Low (Note 7)
250
600
ns
Output Transition tLH Low to High
350
600
ns
Output Leakage Current
Shutdown (Note 5) 0
≤ VOUT ≤ VCC
q
110
A
Receiver 5 (Low Q-Current RX)
Output Voltage
Output Low, IOUT = – 500A
q
0.2
0.4
V
Output High, IOUT = 160A (VL = 3V)
q
2.0
2.4
V
Output Short-Circuit Current
Sinking Current, VOUT = VCC
–4
–2
mA
Sourcing Current, VOUT = 0V
2
4
mA
Propagation Delay
Output Transition tHL High to Low (Note 7)
1
3
s
Output Transition tLH Low to High
1
3
s
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