參數(shù)資料
型號(hào): MAX3250EAI+T
廠商: Maxim Integrated Products
文件頁數(shù): 6/10頁
文件大小: 0K
描述: IC TXRX RS-232 250KBPS 28-SSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,000
類型: 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù): 2/2
規(guī)程: RS232
電源電壓: 3 V ~ 5.5 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)
MAX3250
±50V Isolated, 3.0V to 5.5V,
250kbps, 2 TX/2 RX, RS-232 Transceiver
_______________________________________________________________________________________
5
Pin Description
PIN
NAME
FUNCTION
1
C1-
Negative Terminal of the Power Isolation Capacitor. Connect a 100V capacitor from C1- to C1+.
See Table 1 for values.
2
R1OUT
TTL/CMOS Receiver Output
3
R2OUT
TTL/CMOS Receiver Output
4
T1IN
TTL/CMOS Transmitter Input
5
T2IN
TTL/CMOS Transmitter Input
6, 22, 23
N.C.
No Connection. Not internally connected.
7
N.C.
No Connection. Leave unconnected or connect to ISOCOM.
8
C1+
Positive Terminal of the Power Isolation Capacitor. Connect a 100V capacitor from C1+ to C1-.
See Table 1 for values.
9
C3+
Positive Terminal of the Voltage-Doubler Charge-Pump Capacitor. Connect a 0.1F capacitor from
C3+ to C3-.
10
V+
+5.5V Generated by the Charge Pump, Referenced to ISOCOM. Bypass V+ to ISOCOM with a
0.47F capacitor.
11
C3-
Negative Terminal of the Voltage-Doubler Charge-Pump Capacitor. Connect a 0.1F capacitor from
C3- to C3+.
12
C4+
Positive Terminal of the Inverting Charge-Pump Capacitor. Connect a 0.47F capacitor from
C4+ to C4-.
13
C4-
Negative Terminal of the Inverting Charge-Pump Capacitor. Connect a 0.47F capacitor from
C4- to C4+.
14
V-
-5.5V Generated by the Charge Pump, Referenced to ISOCOM. Bypass V- to ISOCOM with a 0.47F
capacitor.
15
ISOCOM
Isolated Ground
16
T2OUT
RS-232 Transmitter Output
17
T1OUT
RS-232 Transmitter Output
18
R2IN
RS-232 Receiver Input
19
R1IN
RS-232 Receiver Input
20
ISOVCC
Internally Generated Isolated Power-Supply Voltage, Referenced to ISOCOM. Bypass ISOVCC to
ISOCOM with a 2.2F capacitor.
21
C2+
Positive Terminal of the Power Isolation Capacitor. Connect a 100V capacitor from C2+ to C2-.
See Table 1 for values.
24
SHDN
Shutdown Control. Drive SHDN low to enter low-power shutdown mode. Drive SHDN high or connect
to VCC for normal operation.
25
FAULT
Overvoltage Indicator. Active low, open drain.
26
GND
Ground
27
C2-
Negative Terminal of the Power Isolation Capacitor. Connect a 100V capacitor from C2- to C2+.
See Table 1 for values.
28
VCC
3.0V to 5.5V Supply Voltage. Bypass VCC to GND with a 1F capacitor.
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