Datasheet

AC ELECTRICAL CHARACTERISTICS
(1)
TUSB2551A
www.ti.com ...................................................................................................................................................................................................... SCES790 – JUNE 2009
PARAMETER TEST CONDITIONS MIN MAX UNIT
Driver Characteristics (Low Speed)
T
R
Transition rise time C
L
= 200 pF (see Figure 2 ), C
L
= 600 pF 75 300 ns
T
F
Transition fall time C
L
= 200 pF (see Figure 2 ), C
L
= 600 pF 75 300 ns
LRFM Rise/fall time matching T
R
, T
F
80 125 %
V
CRS
Output signal crossover voltage 1.3 2 V
Driver Characteristics (Full Speed)
T
R
Transition rise time C
L
= 50 pF (see Figure 2 ) 4 20 ns
T
F
Transition fall time C
L
= 50 pF (see Figure 2 ) 4 20 ns
FRFM Rise/fall time matching TR, TF 90 111.1 %
V
CRS
Output signal crossover voltage 1.3 2 V
Transceiver Timing (Full Speed)
t
PVZ
OE to receiver 3-state delay See Figure 1 15 ns
t
PZD
Receiver 3-state to transmit delay See Figure 1 15 ns
t
PDZ
OE to driver 3-state delay See Figure 1 15 ns
t
PZV
Driver 3-state to receive delay See Figure 1 15 ns
t
PLH
V
P
, V
M
to D+, D – propagation delay See Figure 4 17 ns
t
PHL
t
PLH
D+, D – to RCV propagation delay See Figure 3 17 ns
t
PHL
t
PLH
D+, D – to V
P
, V
M
propagation delay See Figure 3 10 ns
t
PHL
(1) Specification for packaged product only
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