ADM3076E_15 datasheet(5/20 Pages) AD

Il numero della parte	ADM3076E

Spiegazioni elettronici	Full-Duplex, RS-485/RS-422 Transceivers

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Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

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ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E

Rev. E | Page 5 of 20

TIMING SPECIFICATIONS—ADM3070E/ADM3071E/ADM3072E

VCC = 3.3 V ± 10%, TA = TMIN to TMAX, unless otherwise noted.

Table 3.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

DRIVER

Maximum Data Rate

250

kbps

Propagation Delay, Low-to-High Level

tDPLH

250

1500

ns

CL = 50 pF, RL = 54 Ω (see Figure 8 and Figure 9)

Propagation Delay, High-to-Low Level

tDPHL

250

1500

ns

CL = 50 pF, RL = 54 Ω (see Figure 8 and Figure 9)

Rise Time/Fall Time

tDR/tDF

350

1600

ns

CL = 50 pF, RL = 54 Ω (see Figure 8 and Figure 9)

|tDPLH − tDPHL| Differential Driver Output Skew

tDSKEW

200

ns

CL = 50 pF, RL = 54 Ω (see Figure 8 and Figure 9)1

Enable to Output High

tDZH

2500

ns

See Figure 10

Enable to Output Low

tDZL

2500

ns

See Figure 11

Disable Time from Low

tDLZ

100

ns

See Figure 11

Disable Time from High

tDHZ

100

ns

See Figure 10

Enable Time from Shutdown to High

tDZH(SHDN)

5500

ns

See Figure 10

Enable Time from Shutdown to Low

tDZL(SHDN)

5500

ns

See Figure 11

RECEIVER

Maximum Data Rate

250

kbps

Propagation Delay, Low-to-High Level

tRPLH

200

ns

CL = 15 pF (see Figure 12 and Figure 13)

Propagation Delay, High-to-Low Level

tRPHL

200

ns

CL = 15 pF (see Figure 12 and Figure 13)

|tRPLH − tRPHL| Output Skew

tRSKEW

30

ns

CL = 15 pF (see Figure 12 and Figure 13)

Enable to Output High

tRZH

50

ns

See Figure 14

Enable to Output Low

tRZL

50

ns

See Figure 14

Disable Time from Low

tRLZ

50

ns

See Figure 14

Disable Time from High

tRHZ

50

ns

See Figure 14

Enable Time from Shutdown to High

tRZH(SHDN)

4000

ns

See Figure 14

Enable Time from Shutdown to Low

tRZL(SHDN)

4000

ns

See Figure 14

TIME TO SHUTDOWN

tSHDN

50

200

600

ns

1 VCC = 3.3 V.

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