參數(shù)資料
型號： LT1140ACN
廠商： LINEAR TECHNOLOGY CORP
元件分類： 通用總線功能
英文描述： Advanced Low Power 5V RS232 Drivers/Receivers with Small Capacitors
中文描述： LINE TRANSCEIVER, PDIP24
封裝： 0.300 INCH, PLASTIC, DIP-24
文件頁數(shù)： 5/12頁
文件大?。?/td> 199K
代理商： LT1140ACN
5
LT1130A/LT1140A Series
ELECTRICAL C
temperature range, otherwise specifications are at T
A
= 25
°
C. (Note 2)
HARA TERISTICS
PARAMETER
Supply Current when OFF (V
CC
)
CONDITIONS
Shutdown (Note 4)
Driver Disable
C1, C2, C
+
, C
–
= 1.0
μ
F
C
+
, C
–
= 0.1
μ
F, C1, C2 = 0.2
μ
F
Input Low Level (Device Shut Down)
Input High Level (Device Enabled)
0V
≤
V
ON/OFF
≤
5V
Input Low Level (Drivers Enabled)
Input High Level (Drivers Disabled)
0V
≤
V
DRIVER DISABLE
≤
5V
MIN
TYP
1
4
2.0
0.2
1.4
1.4
MAX
10
UNITS
G
μ
A
mA
ms
ms
Supply Rise Time
Shutdown to Turn-On
ON/OFF Pin Thresholds
G
G
0.8
V
V
2.4
–15
ON/OFF Pin Current
DRIVER DISABLE Pin Thresholds
G
80
0.8
μ
A
V
V
μ
A
kHz
G
G
1.4
1.4
2.4
–10
DRIVER DISABLE Pin Current
Oscillator Frequency
Any Driver
Output Voltage Swing
G
500
130
Load = 3k to GND Positive
Negative
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 (Note 8)
Output Transition t
HL
High to Low (Note 5)
Output Transition t
LH
Low to High
G
G
5
7.3
–6.5
1.4
1.4
5
±
17
10
V
V
V
V
–5
0.8
Logic Input Voltage Level
G
G
2
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Data Rate
G
20
μ
A
mA
μ
A
±
9
G
100
120
250
kbaud
kbaud
V/
μ
s
V/
μ
s
Slew Rate
15
6
0.6
0.5
30
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)
G
G
0.8
1.3
1.7
0.4
5
0.2
4.2
1
–20
20
250
350
V
V
V
2.4
1
7
0.4
Hysteresis
Input Resistance
Output Voltage
G
0.1
3
–10V < V
IN
< 10V
Output Low, I
OUT
= –1.6mA
Output High, I
OUT
= 160
μ
A (V
CC
= 5V)
Shutdown (Note 4) 0
≤
V
OUT
≤
V
CC
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
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:
F
or 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:
For LT1133A/LT1137A, absolute maximum externally applied
V
–
= –6.5V. Internal charge pump will drive this pin to a higher nega-
tive voltage.
Note 8:
For LT1137A, 4V/
μ
s minimum.
k
G
G
V
V
3.5
Output Leakage Current
Output Short-Circuit Current
G
10
–10
μ
A
mA
mA
ns
ns
10
Propagation Delay
600
600
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.
Note 3:
Supply current is measured with driver and receiver outputs
unloaded and the driver inputs tied high.
Note 4:
Supply current and driver leakage current measurements in shut-
down are performed with V
ON/OFF
= 0.1V. Supply current measurements
using DRIVER DISABLE are performed with V
DRIVER DISABLE
= 3V. For
LT1135, LT1139, LT1140 and LT1141 with 12V supplies, V
OUT
leakage is
200
μ
A for V
OUT
forced to
±
25V.
The
G
denotes the specifications which apply over the full operating
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