Datasheet > LTC1485C

LTC1485C

更新时间： 2024-02-03 14:22:46

品牌	Logo	应用领域
凌特 - Linear		总线收发器
页数	文件大小	规格书
12页	258K
描述
Differential Bus Transceiver

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数据手册

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LTC1485C 数据手册

LTC1485

Differential Bus Transceiver

DESCRIPTIO

EATURE

ESD Protection over

Low Power: I_CC= 1.8mA Typ

28ns Typical Driver Propagation Delays with

4ns Skew

Designed for RS485 or RS422 Applications

Single 5V Supply

–7V to 12V Bus Common-Mode Range Permits ±7V

Ground Difference Between Devices on the Bus

Thermal Shutdown Protection

Power-Up/Down Glitch-Free Driver Outputs

Driver Maintains High Impedance in Three-State or

with the Power Off

Combined Impedance of a Driver Output and

Receiver Allows up to 32 Transceivers on the Bus

60mV Typical Input Hysteresis

■

10kV

The LTC^®1485 is a low power differential bus/line trans-

ceiverdesignedformultipointdatatransmissionstandard

RS485 applications with extended common-mode range

(12V to –7V). It also meets the requirements of RS422.

■

The CMOS with Schottky design offers significant power

savings over its bipolar counterpart without sacrificing

ruggedness against overload or ESD damage.

■

The driver and receiver feature three-state outputs, with

the driver outputs maintaining high impedance over the

entire common-mode range. Excessive power dissipation

caused by bus contention or faults is prevented by a

thermal shutdown circuit which forces the driver outputs

into a high impedance state. I/O pins are protected against

multiple ESD strikes of over ±10kV.

■

Pin Compatible with the SN75176A, DS75176A, and

SN75LBC176

The receiver has a fail-safe feature which guarantees a

high output state when the inputs are left open.

O U

BothACandDCspecificationsareguaranteedfrom– 40°C

to 85°C and 4.75V to 5.25V supply voltage range.

PPLICATI

■

Low Power RS485/RS422 Transceiver

Level Translator

, LTC and LT are registered trademarks of Linear Technology Corporation.

■

TYPICAL APPLICATI

LTC1485

120Ω

4000 FT 24 GAUGE TWISTED PAIR

120Ω

DRIVER

RECEIVER

1485 TA01

12 3 4 5 6 7...12

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