Datasheet > MAX3250

MAX3250

更新时间： 2024-11-10 14:58:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
10页	199K
描述
±50V隔离、3.0V至5.5V供电、250kbps、2 Tx/2 Rx、RS-232收发器

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中文翻译

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数据手册

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MAX3250 数据手册

EVALUATION KIT AVAILABLE

50ꢀV IsolatedV3ꢁ0ꢀVasV5ꢁ5ꢀdV250ꢂkbId

2VTx/2VRxdVRS-232VTrlnIctivtr

MAX3250

GtntrloVDtIcribaisn

BtntfiaIVlneVFtlaurtI

The MAX3250 is a 3.0V to 5.5V powered, ±50V isoꢀated

EIA/TIA-232 and V.28/V.24 communications interface

with high data-rate capabiꢀities. The MAX3250 is a duaꢀ

die part that operates with up to ±50V difference

between the RS-232 side and the ꢀogic side (ISOCOM

to GND). This makes the device ideaꢀ for operation in

noisy conditions with high common-mode voꢀtages.

This feature prevents damage to the device if RS-232

ꢀines are inadvertentꢀy short-circuited to a +24V or ±48V

power bus.

• Isoꢀation Breaks Ground Loops Due to High Common-

Mode Voꢀtages Whiꢀe Maintaining Data Rate

• ±50V Isoꢀation

• 250kbps Guaranteed Data Rate

•

FAULT Output Signaꢀs Eꢁcessive Isoꢀated-Side

Voꢀtage

• Integration of Isoꢀation and RS-232 Saves Space

• SSOP Package

• Shutdown Aꢀꢀows Muꢀtipꢀe Interfaces (IrDA, RS-232,

RS-485) to be Connected to the Same UART

• High-Impedance Transmitter and Receiver

The MAX3250 is powered by a singꢀe 3V to 5.5V suppꢀy

on the ꢀogic side. Power is transferred from the ꢀogic

side to the isoꢀated side by ±±00V eꢁternaꢀ capacitors.

Outputs in Shutdown

The MAX3250 has two receivers (Rꢁ) and two drivers

(Tꢁ) and is guaranteed to run at data rates of 250kbps

whiꢀe maintaining RS-232 output ꢀeveꢀs. The trans-

ceivers have a proprietary ꢀow-dropout transmitter out-

put stage, deꢀivering true RS-232 performance from a

3V to 5.5V suppꢀy with a duaꢀ charge pump. The device

features a FAULT open-drain output to signaꢀ an eꢁces-

sive isoꢀated-side voꢀtage condition on any of the RS-

232 inputs. This output can drive an aꢀarm LED or can

be monitored by the processor to prevent operation

under these conditions. The receiver outputs are high

impedance in shutdown, aꢀꢀowing muꢀtipꢀe interfaces

(IrDA, RS-232, RS-485) to be connected to the same

UART.

• 20µA Suppꢀy Current in Shutdown

• Inductorꢀess/Transformerꢀess Design Simpꢀifies EMI

Compꢀiance

• Low-Cost Repꢀacement for Opto-Isoꢀated

Transceivers

• Meets EIA/TIA-232 Specifications Down to 3.0V

PinVCsnfigurlaisn

TOP VIEW

The MAX3250 is avaiꢀabꢀe in a space-saving 28-pin

SSOP package.

C1-

R1OUT

R2OUT

T1IN

28 V

AbboiclaisnI

27 C2-

Industriaꢀ Controꢀ

26 GND

Programmabꢀe Logic Controꢀꢀer

Point-of-Saꢀe Equipment

PC-to-Router Connections

Diagnostic Ports

25 FAULT

24 SHDN

23 N.C.

T2IN

MAX3250

N.C.

22 N.C.

C1+

21 C2+

Teꢀecom Equipment

C3+

20 ISOVCC

19 R1IN

18 R2IN

17 T1OUT

16 T2OUT

15 ISOCOM

V+ 10

C3- 11

C4+ 12

C4- 13

V- 14

OretringV nfsrmlaisn

PART

TEMP RANGE

0°C to +70°C

-40°C to +85°C

PIN-PACKAGE

28 SSOP

MAX3250CAI+

MAX3250EAI+

28 SSOP

+Denotes a ꢀead(Pb)-free/RoHS-compꢀiant package.

SSOP

Typical Operating Circuit appears at end of data sheet.

±9-2443; Rev 4; 2/±5

12 3 4 5 6 7...10

中文翻译

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与MAX3250相关器件

型号	品牌	获取价格	描述	数据表
MAX3250_11	MAXIM	获取价格	50V Isolated, 3.0V to 5.5V, 250kbps, 2 Tx/2 Rx, RS-232 Transceiver
MAX3250CAI	MAXIM	获取价格	【50V Isolated, 3.0V to 5.5V, 250kbps, 2 Tx/2
MAX3250CAI+T	MAXIM	获取价格	Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, BICMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX3250CAI-T	MAXIM	获取价格	Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, BICMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX3250EAI	MAXIM	获取价格	【50V Isolated, 3.0V to 5.5V, 250kbps, 2 Tx/2
MAX3250EAI+	MAXIM	获取价格	Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, BICMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX3250EAI-T	MAXIM	获取价格	Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, BICMOS, PDSO28, 5.30 MM, MO-150, SSOP-28
MAX32510	ADI	获取价格	基于DeepCover安全Arm Cortex-M3的闪存微控制器
MAX32520	ADI	获取价格	ChipDNA Secure Arm Cortex M4 Microcontroller
MAX32520/W+T	MAXIM	获取价格	RISC Microcontroller,

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