ADM485ANZ View Datasheet(PDF) - Analog Devices

Part Name

Description

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ADM485ANZ

5 V Low Power EIA RS-485 Transceiver

Analog Devices 

ADM485

TIMING SPECIFICATIONS

VCC = 5 V ± 5%, all specifications TMIN to TMAX, unless otherwise noted.

Table 2.

Parameter

DRIVER

Propagation Delay Input to Output, tPLH, tPHL

Driver Output to OUTPUT, tSKEW

Driver Rise/Fall Time, tR, tF

Driver Enable to Output Valid

Driver Disable Timing

Matched Enable Switching |tZH − tZL|

Matched Disable Switching |tHZ − tLZ|

RECEIVER

Propagation Delay Input to Output, tPLH, tPHL

Skew |tPLH − tPHL|

Receiver Enable, tZH, tZL

Receiver Disable, tHZ, tLZ

Tx Pulse Width Distortion

Rx Pulse Width Distortion

Min Typ Max Unit Test Conditions/Comments

2

10 15

ns

RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22

15

ns

RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22

8

15 ns

RLDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 22

10 25 ns RL = 110 Ω, CL = 50 pF, see Figure 23

10 25 ns RL = 110 Ω, CL = 50 pF, see Figure 23

02

ns

RL = 110 Ω, CL = 50 pF, see Figure 231

02

ns

RL = 110 Ω, CL = 50 pF, see Figure 231

8

15 30 ns CL = 15 pF, see Figure 24

5

ns CL = 15 pF, see Figure 24

5

20 ns

CL = 15 pF, RL = 1 kΩ, see Figure 25

5

20 ns

CL = 15 pF, RL = 1 kΩ, see Figure 25

1

ns

1

ns

1 Guaranteed by characterization.

Rev. F | Page 4 of 16

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