MAX4670

更新时间： 2024-11-16 05:00:15

品牌	Logo	应用领域
美信 - MAXIM		开关
页数	文件大小	规格书
20页	1120K
描述
Integrated T1/E1/J1 Short-Haul and Long-Haul Protection Switch

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MAX4670 数据手册

19-3798; Rev 0; 09/06

Integrated T1/E1/J1 Short-Haul and

Long-Haul Protection Switch

General Description

Features

The MAX4670 is an integrated T1/E1/J1 analog protec-

tion switch for 1+1 and N+1 line-card redundancy

applications. It protects two T1/E1/J1 ports by combin-

ing eight SPDT switches in a single package. The

switch is optimized for high-return loss and pulse-tem-

plate performance in T1/E1/J1 long-haul and short-haul

applications. The part offers built-in chip-side surge

protection capability for short-haul intrabuilding appli-

cations.

ꢀ Single +3.3V Supply Voltage

ꢀ Quad-DPDT/Octal-SPDT Switches Support

Two T1/E1/J1 Ports

ꢀ Low R_ON

ꢀ 0.7Ω (typ) in Transmit Path; 5Ω (typ) in

Receive Path

ꢀ Low C_ON/C_OFF

60pF/40pF (typ) in Transmit Path

24pF/12pF (typ) in Receive Path

The MAX4670 replaces two diode arrays or two tran-

sient voltage suppressors (TVSs) and four dual-SPDT

relays, significantly reducing board space and simplify-

ing PC board routing. The MAX4670 pinout is targeted

for T1/E1/J1 applications, resulting in a simplified layout

when interfacing with standard line transformers and

line interface units (LIUs).

ꢀ Chip Surge Protection

IEC 61000-4-5 (8µs to 20µs Surge)

Class 2 ( 1ꢀV)

ꢀ -70dB (typ) Crosstalꢀ/Off-Isolation (3MHz)

ꢀ Small, 32-Pin TQFN Pacꢀage

The MAX4670 has four 1.0Ω (max) on-resistance switch-

es with 60pF/40pF on-/off-capacitances for interfacing to

the LIU transmitter outputs. The MAX4670 also includes

four 10Ω (max) on-resistance switches with low

24pF/12pF on-/off-capacitances for interfacing to the LIU

receiver inputs. Four logic inputs control the receive/

transmit pairs, in addition to a SWITCH input that con-

nects all switches to the system’s protection bus.

Ordering Information

PIN-

PACKAGE

SURGE

PROTECTION

PKG

CODE

PART*

32 TQFN

(5mm x 5mm)

MAX4670ETJ

YES

T3255-4

The MAX4670 operates from a single +2.7V to +3.6V

supply and is available in 32-pin thermally enhanced

TQFN package. The MAX4670 is specified over the

-40°C to +85°C operating temperature range.

*This part operates at a -40°C to +85°C temperature range.

Applications

Pin Configuration

Optical Multiplexers (ADMs, M13s, etc.)

TOP VIEW

Edge Routers

Multiservice Switches

NC7

NO7

NC8

NO8

COM8

COM7

IND

NO2

NC2

Base Station Controllers (Wireless Infrastructure

Equipment)

Media Gateways (VoIP)

NO1

NC1

MAX4670

COM1

COM2

INA

Functional Diagram/Truth Table appears at end of data sheet.

*EP

V+

*NOTE:

EXPOSED PADDLE

CONNECTED TO GND

TQFN

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...20

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与MAX4670相关器件

型号	品牌	获取价格	描述	数据表
MAX4670ETJ	MAXIM	获取价格	Integrated T1/E1/J1 Short-Haul and Long-Haul Protection Switch
MAX4670ETJ+	MAXIM	获取价格	SPDT, 1 Func, 1 Channel, CMOS, 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-2, TQF
MAX4670ETJ+T	MAXIM	获取价格	SPDT, 1 Func, 1 Channel, CMOS, 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-2, TQF
MAX4670ETJ-T	MAXIM	获取价格	SPDT, 1 Func, 1 Channel, CMOS, 5 X 5 MM, 0.80 MM HEIGHT, MO-220WHHD-2, TQFN-32
MAX4674	MAXIM	获取价格	3V/5V, 4з, Wideband Quad 2:1 Analog Multiplex
MAX4674	ADI	获取价格	3V/5V、4Ω、宽带四路2:1模拟多路复用器
MAX4674_V01	MAXIM	获取价格	3V/5V, 4â¦, Wideband Quad 2:1 Analog Multipl
MAX4674EEE	MAXIM	获取价格	3V/5V, 4з, Wideband Quad 2:1 Analog Multiplex
MAX4674EEE+T	MAXIM	获取价格	Single-Ended Multiplexer, 4 Func, 2 Channel, CMOS, PDSO16, 0.150 INCH, 0.025 INCH PITCH, Q
MAX4674EGE	MAXIM	获取价格	3V/5V, 4з, Wideband Quad 2:1 Analog Multiplex

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