參數(shù)資料
型號: LTC487
廠商: Linear Technology Corporation
英文描述: Quad Low Power RS485 Driver
中文描述: 四路低功耗485驅動器
文件頁數(shù): 8/8頁
文件大小: 225K
代理商: LTC487
LTC487
A
PPLICATI
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900
G
FAX
: (408) 434-0507
G
TELEX
: 499-3977
LTC487 TA13
120
DRIVER
Z
Y
Figure 12. ESD Protection with TransZorbs
U
S
O
U
U
U
PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
N Package, 16-Lead Plastic DIP
S Package, 16-Lead Plastic SOL
N16 0594
0.260 ± 0.010*
(6.604 ± 0.254)
0.770*
(19.558)
MAX
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0.015
(0.381)
MIN
0.125
(3.175)
MIN
0.130 ± 0.005
(3.302 ± 0.127)
0.065
(1.651)
TYP
0.045 – 0.065
(1.143 – 1.651)
0.018 ± 0.003
(0.457 ± 0.076)
0.045 ± 0.015
(1.143 ± 0.381)
0.100 ± 0.010
(2.540 ± 0.254)
0.009 – 0.015
(0.229 – 0.381)
0.300 – 0.325
(7.620 – 8.255)
0.325–0.015
+0.635
–0.381
8.255
(
)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm).
SOL16 0494
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS.
2. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
NOTE 1
0.398 – 0.413
(10.109 – 10.490)
(NOTE 2)
14
13
16
15
12
11
10
9
1
2
3
4
5
6
7
8
0.394 – 0.419
(10.007 – 10.643)
0.037 – 0.045
(0.940 – 1.143)
0.004 – 0.012
(0.102 – 0.305)
0.093 – 0.104
(2.362 – 2.642)
0.050
(1.270)
TYP
0.014 – 0.019
(0.356 – 0.482)
TYP
0° – 8° TYP
NOTE 1
0.005
(0.127)
RAD MIN
0.009 – 0.013
(0.229 – 0.330)
0.016 – 0.050
(0.406 – 1.270)
0.291 – 0.299
(7.391 – 7.595)
(NOTE 2)
0.010 – 0.029
(0.254 – 0.737)
×
45
°
A TransZorb
is a silicon transient voltage suppressor that
has exceptional surge handling capabilities, fast response
time, and low series resistance. They are available from
General Semiconductor Industries and come in a variety of
breakdown voltages and prices. Be sure to pick a break-
down voltage higher than the common-mode voltage
required for your application (typically 12V). Also, don’t
forget to check how much the added parasitic capacitance
will load down the bus.
U
A
O
PPLICATI
TYPICAL
RS232 to RS485 Level Translator with Hysteresis
LTC487 TA14
HYSTERESIS = 10k
—R
—R
120
DRIVER
Y
Z
R = 220k
10k
RS232 IN
5.6k
1/4 LTC487
LINEAR TECHNOLOGY CORPORATION 1994
LT/GP 0894 0K REV A PRINTED IN USA
相關PDF資料
PDF描述
LTC487CN Quad Low Power RS485 Driver
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