MAX3171CAI Ver la hoja de datos (PDF) - Maxim Integrated

Número de pieza

componentes Descripción

Fabricante

MAX3171CAI

+3.3V Multiprotocol 3Tx/3Rx Software-Selectable Control Transceivers

Maxim Integrated 

+3.3V Multiprotocol 3Tx/3Rx

Software-Selectable Control Transceivers

CTS(DTE)

RTS(DCE)

DSR(DTE)

DTR(DCE)

DTR(DTE)

DSR(DCE)

DCD(DTE) RTS(DTE)

DCD(DCE) CTS(DCE)

MAX3171 R3 R2 R1

MAX3173

D3 D2 D1

MAX3172

MAX3174

R4

D4

RXD(DTE)

TXD(DCE)

RXC(DTE)

SCTE(DCE)

SCTE(DTE)

RXC(DCE)

TXC(DTE) TXD(DTE)

TXC(DCE) RXD(DCE)

R3 R2 R1

D3 D2 D1 MAX3170

M0 M1 M2 DCE/DTE

13 5 10 8

VCC

22 6 23 20 19 4

1

7

18 21

25

M0 M1 DCE/DTE

DB-25 CONNECTOR

16 3 9 17

12 15 11 24 14 2

CABLE WIRING FOR

MODE SELECTION

MODE

PIN 18 PIN 21

V.35

PIN 7 PIN 7

RS-449, V.36 N.C. PIN 7

RS-232

PIN 7 N.C.

CABLE WIRING FOR

DCE/DTE SELECTION

MODE

PIN 25

DTE

PIN 7

DCE

N.C.

Figure 6. Cable-Selectable Multiprotocol DCE/DTE Port

GENERATOR

BALANCED

INTERCONNECTING

CABLE

LOAD

CABLE

TERMINATION

RECEIVER

A

A′

100Ω

MIN

B

B′

C

C′

Figure 7. Typical V.11 Interface

V.10 Interface

The V.10 interface (Figure 10) is an unbalanced single-

ended interface capable of driving a 450Ω load. The

V.10 driver generates a ±4V (min) VODO voltage across

A' and C' when unloaded and a minimum of ±0.9 ✕

VODO voltage with a 450Ω load. The V.10 receiver input

trip threshold is defined between +300mV and -300mV

with the input impedance characteristic shown in

Figure 8.

The MAX3171/MAX3173 V.10 mode receiver has a

threshold between +25mV and +300mV to ensure that

the receiver has proper fail-safe operation (see Fail-

10 ______________________________________________________________________________________

Share Link: