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參數(shù)資料
| 型號： | LT1342CSW#TR |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX 5V RS232 3V LOGIC 28SOIC |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 3/5 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SOIC |
| 包裝： | 帶卷 (TR) |
3
LT1342
ELECTRICAL C
C
HARA TERISTICS (Note 2)
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 the device may be impaired.
Note 2: Testing done at VCC = 5V, VL = 3.3V and VON/OFF = 3V.
Note 3: Supply current is measured with external capacitors C + = C –
= 0.1
F, 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 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 (tHL = 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 (tHL = 1.3V to 2.4V 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
Load = 3k to GND
Positive
q
5
7.3
V
Negative
q
– 6.5
– 5
V
Logic Input Voltage Level
Input Low Level (VOUT = High)
q
1.4
0.8
V
Input High Level (VOUT = Low)
q
2
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
4
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)
0.8
1.3
V
Input High Threshold (VOUT = Low)
1.7
2.4
V
Hysteresis
q
0.1
0.4
1
V
Input Resistance
357
k
Output Leakage Current
Shutdown (Note 4) 0
≤ VOUT ≤ VCC
q
110
A
Receivers 1 Through 4
Output Voltage
Output Low, IOUT = – 1.6mA
q
0.2
0.4
V
Output High, IOUT = 160A
q
2.7
2.9
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
Receiver 5
Output Voltage
Output Low, IOUT = – 500A
q
0.2
0.4
V
Output High, IOUT = 160A
q
2.7
2.9
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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