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LTC1348CSW 数据表(PDF) 3 Page - Linear Technology

部件名 LTC1348CSW
功能描述  3.3V/5V Low Power RS232 3-Driver/5-Receiver Transceiver
PDF  8 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1348CSW 数据表(HTML) 3 Page - Linear Technology

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LTC1348
ELECTRICAL C
C
HARA TERISTICS
C
D
VCC = 3V to 5.5V, C1 to C4 = 0.1µF, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply Generator
V+ Output Voltage
IOUT = 0mA
8.0
V
IOUT = 8mA
7.5
V
V– Output Voltage
IOUT = 0mA
– 8.0
V
IOUT = – 8mA
– 7.0
V
Supply Rise Time
Shutdown to Turn-On
0.2
ms
Power Supply
VCC Supply Current
No Load (Note 2) VCC = 3.3V
q
0.6
2.0
mA
No Load (Note 2) VCC = 5V
q
0.8
2.5
mA
Receiver Alive Mode (Note 4) VCC = 3.3V or 5V
q
15
30
µA
Supply Leakage Current (VCC)
Shutdown (Note 3)
q
0.2
10
µA
Driver/Receiver Enable Threshold Low
q
0.8
V
Driver/Receiver Enable Threshold High
VCC = 3.3V
q
2.0
V
Driver/Receiver Enable Threshold High
VCC = 5V
q
2.4
V
AC ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Data Rate
RL = 3k, CL = 1000pF, One Driver Switching
120
250
kbps
Slew Rate
VCC = 5V, RL = 3k, CL = 51pF
8
30
V/
µs
VCC = 3.3V, RL = 3k, CL = 2500pF
3
V/
µs
Driver Propagation Delay
tHLD (Figure 1)
q
2.5
4
µs
(TTL to RS232)
tLHD (Figure 1)
q
2.5
4
µs
Receiver Propagation Delay
tHLR (Figure 2) (Normal Mode)
q
0.3
1
µs
(RS232 to TTL)
tLHR (Figure 2) (Normal Mode)
q
0.2
1
µs
tHLR (Figure 2) (Receiver Alive Mode)
q
1.0
4
µs
tLHR (Figure 2) (Receiver Alive Mode)
q
0.2
4
µs
Note 3: Supply current measurement in Shutdown is performed with
VDREN and VRXEN = 0V.
Note 4: Supply current measurement in Receiver Alive mode is performed
with VDREN = 0V and VRXEN = VCC.
VCC = 3V to 5.5V, C1 to C4 = 0.1µF, unless otherwise noted.
The q denotes specifications which apply over the full operating
temperature range (0
°C ≤ TA ≤ 70°C for Commercial grade and
–40
°C ≤ TA ≤ 85°C for Industrial grade).
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Supply current is measured with driver and receiver outputs
unloaded. The VDREN and VRXEN = VCC.



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