Datasheet
DS481
www.ti.com
SNLS131B –JULY 2000–REVISED MARCH 2013
Switching Characteristics
Over Supply Voltage and Operating Temperature Ranges, unless otherwise specified
(1) (2) (3)
Parameter Test Conditions Min Typ Max Units
t
PLHD
Driver Differential Propagation Delay—Low to High R
L
= 54Ω, C
L
= 100 pF 10 40 80 ns
t
PHLD
Driver Differential Propagation Delay—High to Low 10 39 80 ns
t
SKEW
Differential Skew |t
PHLD
− t
PLHD
| 0 1 10 ns
t
r
Driver Rise Time 3 25 50 ns
t
f
Driver Fall Time 3 25 50 ns
t
ZH
Driver Enable to Output High C
L
= 100 pF 50 200 ns
t
ZL
Driver Enable to Output Low C
L
= 100 pF 65 200 ns
t
LZ
Driver Disable from Output Low C
L
= 15 pF 80 200 ns
t
HZ
Driver Disable from Output High C
L
= 15 pF 80 200 ns
t
PSH
Driver Enable from Sleep C
L
= 100 pF
70 98 250 ns
Mode to Output High
(4)
(Figure 6, Figure 7)
t
PSL
Driver Enable from Sleep C
L
= 100 pF
70 98 250 ns
Mode to Output Low
(4)
(Figure 8 ,Figure 9)
t
PLHD
Receiver Differential Propagation Delay—Low to High C
L
= 15 pF (RO) 30 190 400 ns
t
PHLD
Receiver Differential Propagation Delay—High to Low 30 210 400 ns
t
SKEW
Differential Skew |t
PHLD
− t
PLHD
| 0 20 50 ns
t
ZH
Receiver Enable to Output High C
L
= 15 pF 45 150 ns
t
ZL
Receiver Enable to Output Low 40 150 ns
t
LZ
Receiver Disable from Output Low 50 150 ns
t
HZ
Receiver Disable from Output High 55 150 ns
t
PSH
Receiver Enable from Sleep C
L
= 15 pF
70 97 250 ns
Mode to Output High
(4)
(Figure 12, Figure 14)
t
PSL
Receiver Enable from Sleep C
L
= 15 pF
70 95 250 ns
Mode to Output Low
(4)
(Figure 12, Figure 13)
t
SLEEP
Time to Sleep (Device) DE = L and RE
(5)
= H
50 600 ns
(Figure 15)
f
max
Maximum Data Rate
(6)
2.0 Mbps
(1) All typicals are given for: V
CC
= +5.0V, T
A
= +25°C.
(2) f = 1 MHz, t
r
and t
f
≤ 6 ns, Z
O
= 50Ω.
(3) C
L
includes jig and probe capacitance.
(4) For enable from sleep mode delays DE = L and RE = H for greater than 600 ns prior to test (device is in sleep mode). RE is Non
Terminated, Open Input only.
(5) Non Terminated, Open Input only
(6) f
max
is the guaranteed data rate for 50 ft of twisted pair cable. f
max
may be conservatively determined from the ratio of driver transition
time (t
r
) to the data rate unit interval (1/f
max
). Using a 10% ratio yields f
max
= (0.1)/50 ns = 2.0 Mb/s. Higher data rates may be supported
by allowing larger ratios.
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