电信线卡：T1、E1、J1



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Maxim > 方案 > 电信线卡：T1、E1、J1

线路接口单元：组合了T1、E1、J1

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QV PDF

+3.3V/+5V、8通道继电器驱动器，具有快速恢复和省电模式
MAX4822, MAX4823, MAX4824, MAX4825

8通道继电器驱动器适用于非锁存或双线圈锁存继电器

QV PDF

集成T1/E1/J1短程、长程保护开关
MAX4670

QV PDF

3.3V、E1/T1/J1四线路接口
DS21448

3.3V E1/T1/J1、4端口线路接口单元，用于短程或长程通信系统

QV PDF

5V、E1/T1/J1线路接口
DS2148, DS21Q48

QV PDF

3.3V、E1/T1/J1线路接口
DS21348, DS21Q348

Key Specifications: Relay Drivers

Part Number

Min. Guaranteed Source Current (mA) @ 2.7V

Output On-Resistance @ 2.7V (max) (Ω)

Quiescent Current (max) (µA)

Features

Number of Channels

Interface

Supply Voltage (V)

Package

Smallest Available Package (max w/pins) (mm²)

MAX4822

160

•	Daisy-Chainable

•	Integrated Kickback Diodes

•	Power On Reset

•	Power-Save

•	Thermal Shutdown

SPI

2.3 to 5.5

TQFN/20

MAX4823

160

•	Daisy-Chainable

•	Integrated Kickback Diodes

•	Power On Reset

•	Thermal Shutdown

SPI

2.3 to 5.5

TQFN/20

MAX4824

160

•	Daisy-Chainable

•	Integrated Kickback Diodes

•	Power On Reset

•	Power-Save

•	Thermal Shutdown

Parallel

2.3 to 5.5

TQFN/20

MAX4825

160

•	Daisy-Chainable

•	Integrated Kickback Diodes

•	Power On Reset

•	Thermal Shutdown

Parallel

2.3 to 5.5

TQFN/20
TSSOP-EP/20

See All Relay Drivers (7)

Key Specifications: Switches and Multiplexers (Low Voltage)

Part Number

Configuration

Number of Channels

Normally (Open/Closed)

V_SUPPLY, Single (min) (V)

V_SUPPLY, Single (max) (V)

R_ON (max) (Ω)

Bandwidth (MHz)

I_{L (OFF)} (max) (nA)

t_ON (max) (nS)

t_OFF (max) (nS)

Q_INJECTION (pC)

C_ON (pF)

C_OFF (pF)

MAX4670

SPDT

Open/Closed

2.7

3.6

0.01

400

200

See All Switches and Multiplexers (Low Voltage) (158)

Key Specifications: T/E Carrier & Packetized Products

Part Number

Transmission Standard

Functions

Number of Channels

Supply Voltage (V)

EV-Kit

Package

Smallest Available Package (max w/pins) (mm²)

DS21448

T1/E1/J1

•

LIU

3.3

Yes

LQFP/128
TEPBGA/144

289

DS21348

T1/E1/J1

•

LIU

3.3

Yes

CSBGA/49
TQFP/44

DS2148

T1/E1/J1

•

LIU

Yes

CSBGA/49
TQFP/44

See All T/E Carrier & Packetized Products (102)