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参数资料
| 型号： | MAX3157CAI |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/13页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485/422 250KBPS 28SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 46 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422，RS485 |
| 电源电压： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 管件 |
MAX3157
High CMRR RS-485 Transceiver
with ±50V Isolation
_______________________________________________________________________________________
9
Pin Description
PIN
SSOP
PDIP
NAME
FUNCTION
12
RO
Receiver Output. When RE is low and A - B > -50mV, RO will be high; if A - B
≤ -200mV,
RO will be low.
23
RE
Receiver Output Enable. Drive RE low to enable RO.
3
4
DE
Driver Output Enable. Drive DE high to enable driver outputs.
45
DI
Driver Input. With DE high, a low on DI forces the noninverting output low and the inverting
output high; with DI high, outputs reverse.
5
6
C1LO
Connect to the negative terminal of C1 (0.047F, 50V).
6, 7,
12, 22,
23
1, 12,
14, 15,
28
N.C.
No Connection
8
7
C1HI
Connect to the positive terminal of C1 (0.047F, 50V).
9
8
ISOVCC
Internally generated power-supply voltage, referenced to the cable ground (ISOCOM).
Connect a 1F capacitor to ISOCOM.
10
9
H/F
Half/Full-Duplex Selector Pin. Leave open, or connect to ISOCOM to select Full Duplex, or
connect to ISOVCC to select Half Duplex.
11
10
ZR
Connect to ISOCOM for a 1.5k
input impedance on Z. Leave open for a 12k input
impedance on Z.
13
11
YR
Connect to ISOCOM for a 1.5k
input impedance on Y. Leave open for a 12k input
impedance on Y.
14
13
ISOCOM
Cable Ground
15
16
Z
Inverting Driver Output (and Inverting Receiver Input in Half-Duplex Mode)
16
17
Y
Noninverting Driver Output (and Noninverting Receiver Input in Half-Duplex Mode)
17
18
B
Inverting Receiver Input in Full-Duplex Mode
18
19
A
Noninverting Receiver Input in Full-Duplex Mode
19
20
BR
Connect to ISOCOM for a 1.5k
input impedance on B. Leave open for a 12k input
impedance on B.
20
21
AR
Connect to ISOCOM for a 1.5k
input impedance on A. Leave open for a 12k input
impedance on A.
21
22
C2HI
Connect to the positive terminal of C2 (0.047F, 50V).
24
23
C2LO
Connect to the negative terminal of C2 (0.047F, 50V).
25
24
GND
Ground
26
25
TXP
Transmitter Phase. Leave open, or connect to GND for normal transmitter polarity, or connect
to VCC to invert the transmitter polarity.
27
26
RXP
Receiver Phase. Leave open, or connect to GND for normal receiver polarity, or connect to
VCC to invert the receiver polarity.
28
27
VCC
+4.75V to +5.25V Positive Supply. Connect a 0.1F capacitor to GND.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3157CAI+ | 功能描述:RS-422/RS-485 接口 IC High CMRR RS-485 Tcvr w/+-50V Iso 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 |
| MAX3157CAI+T | 功能描述:RS-422/RS-485 接口 IC High CMRR RS-485 Tcvr w/+-50V Iso 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 |
| MAX3157CAI-T | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3157CPI | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX3157CPI+ | 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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