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参数资料
| 型号： | MAX1490EACPG |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 通用总线功能 |
| 英文描述： | 15kV ESD-Protected, Isolated RS-485/RS-422 |
| 中文描述： | LINE TRANSCEIVER, PDIP24 |
| 封装： | PLASTIC, DIP-24 |
| 文件页数： | 12/21页 |
| 文件大小： | 487K |
| 代理商： | MAX1490EACPG |
M
Complete, Isolated RS-485/RS-422
Data Interface
12
______________________________________________________________________________________
The MAX1480A/MAX1480B/MAX1480C/MAX1490A/
MAX1490B typically withstand 1600V
RMS
(1 minute) or
2000V
RMS
(1 second). The logic inputs can be driven
from TTL/CMOS-logic with a series resistor, and the
received data output can directly drive TTL or CMOS-
logic families with only resistive pullup.
Low-Power Shutdown Mode
The SD pin shuts down the oscillator on the internal power
driver. With the primary side in shutdown, no power is
transferred across the isolation barrier. The DI and DE
optocouplers, however, still consume current if the drive
signals on the nonisolated side are low. Therefore, leave
DI
′
and DE
′
high or floating when in shutdown mode.
AC1 (MAKE NO CONNECTION)
AC2 (MAKE NO CONNECTION)
ISO V
CC1
SHIELD (OPTIONAL)
EXTERNAL RS-485/RS-422 WIRING
B
D2
D1
V
CC2
V
CC1
ISO RO DRV
A
B
A
SH
ISO DI IN
ISO DE IN
V
CC3
SD
FS
GND1
ISO COM1
ISO DI DRV
ISO V
CC2
ISO DE DRV
GND2
DE
V
CC4
DI
ISO COM2
ISO RO LED
V
CC5
RO
R
L
R
L
R4
R5
R7
100
R1
R2
R3
R6
DE
′
DI
′
V
IN
5V
22
μ
F
0.1
μ
F
C1
C2
MAX1480A/B/C
LOGIC GROUND
ISOLATION BARRIER
ISOLATED COMMON
DRIVER INPUT
DRIVER ENABLE
RECEIVER OUTPUT
DE
DI
RO
74HC86
OR EQUIVALENT
MAX1487
MAX487
MAX845
1
2
28
27
3
4
5
6
7
8
9
10
11
12
13
14
26
25
24
23
22
21
20
19
18
17
16
15
MAX845
N
MAX1480A: MAX1487
MAX1480B: MAX487
MAX1480C: MAX487
RE
ISO RO DRV
ISO DE IN
ISO DI IN
ISO COM1
ISO V
CC1
A
B
R
D
N
Q
Q
T F/F
V
CC3
FS
OSC
1.07MHz/
1.45MHz
SD
GND1
D2
D1
SHIELD (OPTIONAL)
NOTE: RESISTOR R7 PROTECTS
THE MAX1480A/B/C FROM TRANSIENT
CURRENTS BETWEEN SHIELD AND
TRANSMISSION LINES.
TWISTED PAIR
TO OTHER TRANSCEIVERS
TERMINATING RESISTOR
(ONE RESISTOR ON EACH END)
TWISTED PAIR
TO OTHER TRANSCEIVERS
Figure 1. MAX1480A/MAX1480B/MAX1480C Detailed Block Diagram and Typical Application Circuit
200
510
200
R2 (
)
4300
2200
3000
R4 (
)
1000
3000
3000
R3 (
)
200
200
200
R6 (
)
1000
3000
3000
R5 (
)
200
200
200
MAX1480A
MAX1480B
MAX1480C
R1 (
)
PART
Table 1. Pull-Up and LED Drive Resistors
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1480AEPI | Complete, Isolated RS-485/RS-422 Data Interface |
| MAX1480BEPI | Complete, Isolated RS-485/RS-422 Data Interface |
| MAX1480CEPI | Complete, Isolated RS-485/RS-422 Data Interface |
| MAX1480BCPI | Complete, Isolated RS-485/RS-422 Data Interface |
| MAX1480ACPI | Complete, Isolated RS-485/RS-422 Data Interface |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1490EACPG+ | 功能描述:RS-422/RS-485 接口 IC Isolated RS-485/422 Data Interface RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX1490EAEPG | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX1490EAEPG+ | 功能描述:RS-422/RS-485 接口 IC Isolated RS-485/422 Data Interface RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX1490EBCPG | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
| MAX1490EBCPG+ | 功能描述:RS-422/RS-485 接口 IC Isolated RS-485/422 Data Interface RoHS:否 制造商:Maxim Integrated 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
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