Datasheet

Electrical Specifications
12−3
SLLS535E − April 2008 TUSB6250
12.6 Electrical Characteristics for the Integrated USB 2.0 Transceiver, T
A
= 25°C,
V
DDA
= 3.3 V ±5%, V
SS
= 0 V (unless otherwise noted)
†
PARAMETER MIN TYP MAX UNIT
INPUT LEVELS FOR FULL SPEED
V
ID
High-speed differential input threshold 0.2 V
V
CM
Differential common mode range 0.8 2.5 V
INPUT LEVELS FOR HIGH SPEED
V
(HSSQ)
High-speed squelch detection threshold (differential signal amplitude) 100 150 mV
V
ID
High-speed differential input threshold voltage 100 mV
OUTPUT LEVELS FOR FULL SPEED
V
OL
Low-level output voltage 0 0.3 V
V
OH
High-level output voltage (driven) 2.8 3.6 V
V
O(SE0)
Output voltage on SE0 0.8 V
V
O(CRS)
Output signal crossover voltage 1.3 2 V
OUTPUT LEVELS FOR HIGH SPEED
V
(HSOI)
High-speed idle level −10 10 mV
V
(HSOH)
High-speed data signaling high 360 440 mV
V
(HSOL)
High-speed data signaling low −10 10 mV
V
ID(CHIRPJ)
Chirp J level (differential voltage) 700 1100 mV
V
ID(CHIRPK)
Chirp K level (differential voltage) −900 −500 mV
DRIVER CHARACTERISTICS (FULL SPEED)
t
r
Full-speed rise time 4 20 ns
t
f
Full-speed fall time 4 20 ns
t
(RFM)
Full-speed rise/fall time matching 90% 110%
DRIVER CHARACTERISTICS (HIGH SPEED)
t
r
Rise time (10%−90%) 500 ps
t
f
Fall time (10%−90%) 500 ps
r
o(HSDRV)
Driver output resistance (serves as a high-speed termination) 40.5 49.5 Ω
t
(FRFM)
Differential rise and fall time matching 90% 111.11%
CLOCK TIMING
f
(HSDRAT)
High-speed data rate 479.76 480.24 Mb/s
SINGLE-ENDED RECEIVER
V
IT+
Positive-going input threshold voltage 1.8 V
V
IT−
Negative-going input threshold voltage 1 V
V
hys
Hysteresis voltage 200 500 mV
†
Characterization only. Limits approved by design.