Datasheet

8
LTC1483
sn1483 1483fs
 LINEAR TECHNOLOGY CORPORATION 1994
LT/GP 1094 10K • PRINTED IN THE USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
[phone]
●
FAX : [phone]
●
TELEX : 499-3977
APPLICATIO S I FOR ATIO
UU W U
Shutdown Mode
Both the receiver output (RO) and the driver outputs (A, B)
can be placed in three-state mode by bringing RE high and
DE low respectively. In addition, the LTC1483 will enter
shutdown mode when RE is high and DE is low.
In shutdown the LTC1483 typically draws only 1µA of
supply current. In order to guarantee that the part goes
into shutdown, RE must be high and DE must be low for
at least 600ns simultaneously. If this time duration is less
than 50ns the part will not enter shutdown mode. Toggling
either RE or DE will wake the LTC1483 back up within
3.5µs.
If the slow slew rate driver was active immediately prior to
shutdown, the supply current will not drop to 1µA until the
driver outputs have reached a steady state; this can take as
long as 2.6µs under worst case conditions. If the driver
was disabled prior to shutdown the supply current will
drop to 1µA immediately.
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC485 5V Low Power RS485 Interface Transceiver Low Power
LTC1480 3.3V Ultra-Low Power RS485 Transceiver World’s First 3V Powered 485 Transceiver with Low Power Consumption
LTC1481 5V Ultra-Low Power RS485 Transceiver with Shutdown Lowest Power
LTC1485 5V Differential Bus Transceiver Highest Speed
LTC1487 5V Ultra-Low Power RS485 with Low EMI Shutdown High Input Impendance/Low EMI/Lowest Power
and High Input Impendance
Dimension in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
U
N Package
8-Lead Plastic DIP
N8 0695
0.005
(0.127)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
0.065
(1.651)
TYP
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.015
(0.380)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.125
(3.175)
MIN
12
3
4
876
5
0.255 ± 0.015*
(6.477 ± 0.381)
0.400*
(10.160)
MAX
0.009 – 0.015
(0.229 – 0.381)
0.300 – 0.325
(7.620 – 8.255)
0.325
+0.025
–0.015
+0.635
–0.381
8.255
()
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
1
2
3
4
0.150 – 0.157**
(3.810 – 3.988)
8
7
6
5
0.189 – 0.197*
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
0.016 – 0.050
0.406 – 1.270
0.010 – 0.020
(0.254 – 0.508)
× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
SO8 0695
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
S Package
8-Lead Plastic SOIC