參數(shù)資料
型號： MAX3157CAI-T
廠商： Maxim Integrated Products
文件頁數(shù)： 13/13頁
文件大小： 0K
描述： IC TXRX RS485/422 250KBPS 28SSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 2,000
類型： 收發(fā)器
驅(qū)動器/接收器數(shù)： 1/1
規(guī)程： RS422，RS485
電源電壓： 4.75 V ~ 5.25 V
安裝類型： 表面貼裝
封裝/外殼： 28-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 28-SSOP
包裝： 帶卷 (TR)
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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參數(shù)描述
MAX3157CPI 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
MAX3157CPI+ 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
MAX3157EAI 功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
MAX3157EAI+ 功能描述:RS-422/RS-485 接口 IC High CMRR RS-485 Trxvr w/+-50V Iso RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
MAX3157EAI+T 功能描述:RS-485接口IC High CMRR RS-485 Trxvr w/+-50V Iso RoHS:否 制造商:Texas Instruments 數(shù)據(jù)速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
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