Datasheet > ZT490EREN

ZT490EREN

更新时间： 2024-02-19 08:27:03

品牌	Logo	应用领域
亚信 - ASIX		/
页数	文件大小	规格书
14页	619K
描述
Line Driver/Receiver,

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技术参数
数据手册

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ZT490EREN 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.74
Base Number Matches：	1

ZT490EREN 数据手册

Zywyn Corporation

ZT4xxER

DCElectricalCharacteristics

Unless otherwise stated, V_CC= +5.0V, T_A= T_minto T_max, typical values apply at V_CC= +5.0V and T_A= 25°C.

Parameter

Condition

Min

Typ

Max

Units

TTL Logic Input

TTL Logic Output

RS485 Input

RS485 Output

Power Pin

DE, DI, RE

A,B

Y, Z

V_CC,V_GND

High Z_O/Pwhen disabled

Temp 0°C to +70°C

Temp –40°C to +85°C

V_CCVoltage Range

Commercial Grade

Industrial Grade

V_CC= +5.0V Supply

–40

4.75

+25

5.0

+70

+85

5.25

°C

Supply Current

I_CC, Tx and Rx active

I_CC, Txactive

DI=V_CC/GND, DE=V_CC, RE=GND, RS485 I/P=Open

DI=V_CC/GND, DE=V_CC, RE=V_CC, RS485 I/P=Open

DI=V_CC/GND, DE=GND, RE=GND, RS485 I/P=Open

400

900

µA

_CC, Rx active

400

1.0

900

µA

_SD, Shutdown Current DI=V_CC/GND, DE = GND, RE = V_CC,RS485 I/P=Open

TTLLOGICInput

Input Threshold Low

Input Threshold High

V_CC= +5.0V Supply, DE, DI, and RE

0.8

2.0

TTLLOGICOutput

Output Voltage Low

Output Voltage High

Output Leakage Current

Short Circuit Current

_OUT= +4mA, Input Differential Voltage = 200mV

0.4

I_OUT= –4mA, Input Differential Voltage = 200mV

Receiver Outputs Disabled, V_OUT= 0.4V to 2.4V

V_OUT= 0V to V_CC

3.5

±1

µA

ReceiverInput

Input Current

DE = 0V, V_CC= 0V to 5.25V, V_IN= +12V

DE = 0V, V_CC= 0V to 5.25V, V_IN= –7V

1.0

–0.8

DIfferentialThresholdVoltage,V V_CM= 0V, V_CC=+5.0V, T_A=25^oC

–0.2

+0.2

Input Hysteresis

V_CM= 0V

kΩ

Input Resistance, R_IN

V_CM= -7V to +12V

Transmitter Output

DIfferentialOutputVoltage,V

No Load

DIfferentialOutputVoltage,dV

With R_L= 50Ω, C_L= 50pF, Refers to figure 1. (RS422)

With R_L= 27Ω, C_L= 50pF, Refers to figure 1. (RS485)

1.5

DriverCommonModeOutput

With R_L= 27Ω or 50Ω. C_L= 50pF. Refers to figure 3.

Differential Output Voltage, with R_L= 27Ω or 50Ω, C_L= 50pF.

Refers to figure 1.

ChangeinVoltageMagnitude

forComplimentaryStates,dV

0.2

ChangeinVoltageMagnitude

forComplimentaryStates,V

Common-Mode Output Voltage, with R_L= 60Ω,375Ω,375Ω.

Refers to figure 2.

0.2

TransmitterShort-CircuitCurrent Output HIGH, V_OUT= -7V to +12V. Refers to figure 7.

Output LOW, V_OUT= -7V to +12V. Refers to figure 7.

250

Specifications subject to change without notice

Zywyn

Febuary 2005

rev.1.2

1 234 5 6 7...14

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