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參數(shù)資料
| 型號(hào)： | LT1237 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Advanced Low Power Three Driver, Five Receiver RS232 Transceiver.(先進(jìn)的低功率3發(fā)4收RS232收發(fā)器) |
| 中文描述： | 先進(jìn)的低功耗三驅(qū)動(dòng)器，接收器的RS232收發(fā)器五。（先進(jìn)的低功率3發(fā)4收的RS232收發(fā)器） |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 178K |
| 代理商： | LT1237 |
3
LT1237
ELECTRICAL C
temperature range, otherwise specifications are at T
A
= 25
°
C. (Note 2)
HARA TERISTICS
PARAMETER
Any Driver
Output Voltage Swing
CONDITIONS
MIN
TYP
MAX
UNITS
Load = 3k to GND
Positive
Negative
G
G
5.0
7.5
–6.3
1.4
1.4
5
17
10
V
V
V
V
–5.0
0.8
Logic Input Voltage Level
Input Low Level (V
OUT
= High)
Input High Level (V
OUT
= Low)
0.8V
≤
V
IN
≤
2V
V
OUT
= 0V
Shutdown V
OUT
=
±
30V (Note 4)
R
L
= 3k, C
L
= 2500pF
R
L
= 3k, C
L
= 1000pF
R
L
= 3k, C
L
= 51pF
R
L
= 3k, C
L
= 2500pF
Output Transition t
HL
High to Low (Note 5)
Output Transition t
LH
Low to High
G
G
2.0
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Data Rate (Note 7)
G
20
μ
A
mA
μ
A
±
9
G
100
120
250
kBaud
kBaud
V/
μ
s
V/
μ
s
Slew Rate
15
7
0.6
0.5
30
4
Propagation Delay
1.3
1.3
μ
s
μ
s
Any Receiver
Input Voltage Thresholds
Input Low Threshold (V
OUT
= High)
Input High Threshold (V
OUT
= Low)
0.8
1.3
1.7
0.4
5
1
V
V
V
2.4
1.0
7
10
Hysteresis
Input Resistance
Output Leakage Current
Receivers 1, 2, 3, 4
Output Voltage
G
0.1
3
V
IN
=
±
10V
Shutdown (Note 4) 0
≤
V
OUT
≤
V
CC
k
μ
A
G
Output Low, I
OUT
= –1.6mA
Output High, I
OUT
= 160
μ
A (V
CC
= 5V)
Sinking Current, V
OUT
= V
CC
Sourcing Current, V
OUT
= 0V
Output Transition t
HL
High to Low (Note 6)
Output Transition t
LH
Low to High
G
G
0.2
4.2
–20
20
250
350
0.4
V
V
3.5
–10
10
Output Short-Circuit Current
mA
mA
ns
ns
Propagation Delay
600
600
Receiver 5 (LOW I
SUPPLY
RX)
Output Voltage
Output Low, I
OUT
= –500
μ
A
Output High, I
OUT
= 160
μ
A (V
CC
= 5V)
Sinking Current, V
OUT
= V
CC
Sourcing Current, V
OUT
= 0V
Output Transition t
HL
High to Low (Note 6)
Output Transition t
LH
Low to High
G
G
0.2
4.2
–4
4
1.0
0.6
0.4
V
V
3.5
–2
2
Output Short-Circuit Current
mA
mA
μ
s
μ
s
Propagation Delay
3
3
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
Testing done at V
CC
= 5V and V
ON/OFF
= 3V, unless otherwise
specified.
Note 3:
Supply current is measured as the average over several charge
pump burst cycles. C
+
= 1.0
μ
F, C
–
= 0.1
μ
F, C1 = C2 = 0.2
μ
F. All outputs
are open, with all driver inputs tied high.
Note 4:
Measurements in shutdown are performed with V
ON/OFF
≤
0.1V.
Supply current measurements using driver disable are performed with
V
DRIVER DISABLE
≥
3V.
Note 5:
For driver delay measurements, R
L
= 3k and C
L
= 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 t
LH
= 1.4V to 0V).
Note 6:
For receiver delay measurements, C
L
= 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 2.4V and t
LH
= 1.7V
to 0.8V).
Note 7:
Data rate operation guaranteed by slew rate, short-circuit current
and propagation delay tests.
The
G
denotes specifications which apply over the full operating
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