Data Sheet

ADM4850 to ADM4857

Rev. F | Page 5 of 16

ADM4852/ADM4856 TIMING SPECIFICATIONS

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

Table 5.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

DRIVER

Maximum Data Rate

2.5

Mbps

Propagation Delay

t

PLH, tPHL

50

180

ns

R

LDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 21 and Figure 25

Skew

t

SKEW

50

ns

R

LDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 21 and Figure 25

Rise/Fall Times

t

R, tF

140

ns

R

LDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 21 and Figure 25

Enable Time

t

ZH, tZL

180

ns

R

L = 500 Ω, CL = 100 pF, see Figure 22 and Figure 27 (ADM4852

only)

Disable Time

t

LZ, tHZ

180

ns

R

L = 500 Ω, CL = 100 pF, see Figure 22 and Figure 27 (ADM4852

only)

Enable Time from Shutdown

4000

ns

R

L = 500 Ω, CL = 100 pF, see Figure 22 (ADM4852 only)

RECEIVER

Propagation Delay

t

PLH, tPHL

55

190

ns

C

L = 15 pF, see Figure 23 and Figure 26

Differential Skew

t

SKEW

50

ns

C

L = 15 pF, see Figure 23 and Figure 26

Enable Time

t

ZH, tZL

5

50

ns

R

L = 1 kΩ, CL = 15 pF, see Figure 24 and Figure 28 (ADM4852 only)

Disable Time

t

LZ, tHZ

20

50

ns

R

L = 1 kΩ, CL = 15 pF, see Figure 24 and Figure 28 (ADM4852 only)

Enable Time from Shutdown

4000

ns

R

L = 1 kΩ, CL = 15 pF, see Figure 24 (ADM4852 only)

Time to Shutdown

50

330

3000

ns

ADM4852 only1

1 The half-duplex device is put into shutdown mode by driving RE high and DE low. If these inputs are in this state for less than 50 ns, the device is guaranteed not to

enter shutdown mode. If the enable inputs are in this state for at least 3000 ns, the device is guaranteed to enter shutdown mode.

ADM4853/ADM4857 TIMING SPECIFICATIONS

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

Table 6.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions/Comments

DRIVER

Maximum Data Rate

10

Mbps

Propagation Delay

t

PLH, tPHL

0

30

ns

R

LDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 21 and Figure 25

Skew

t

SKEW

10

ns

R

LDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 21 and Figure 25

Rise/Fall Times

t

R, tF

30

ns

R

LDIFF = 54 Ω, CL1 = CL2 = 100 pF, see Figure 21 and Figure 25

Enable Time

t

ZH, tZL

35

ns

R

L = 500 Ω, CL = 100 pF, see Figure 22 and Figure 27 (ADM4853 only)

Disable Time

t

LZ, tHZ

35

ns

R

L = 500 Ω, CL = 100 pF, see Figure 22 and Figure 27 (ADM4853 only)

Enable Time from Shutdown

4000

ns

R

L = 500 Ω, CL = 100 pF, see Figure 22 (ADM4853 only)

RECEIVER

Propagation Delay

t

PLH, tPHL

55

190

ns

C

L = 15 pF, see Figure 23 and Figure 26

Differential Skew

t

SKEW

30

ns

C

L = 15 pF, see Figure 23 and Figure 26

Enable Time

t

ZH, tZL

5

50

ns

R

L = 1 kΩ, CL = 15 pF, see Figure 24 and Figure 28 (ADM4853 only)

Disable Time

t

LZ, tHZ

20

50

ns

R

L = 1 kΩ, CL = 15 pF, see Figure 24 and Figure 28 (ADM4853 only)

Enable Time from Shutdown

4000

ns

R

L = 1 kΩ, CL = 15 pF, see Figure 24 (ADM4853 only)

Time to Shutdown

50

330

3000

ns

ADM4853 only1

1 The half-duplex device is put into shutdown mode by driving RE high and DE low. If these inputs are in this state for less than 50 ns, the device is guaranteed not to

enter shutdown mode. If the enable inputs are in this state for at least 3000 ns, the device is guaranteed to enter shutdown mode.