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UPD720122 Datasheet(PDF) 14 Page - NEC

No. de pieza UPD720122
Descripción Electrónicos  MOS Integrated Circuit
PDF  82 Pages
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Fabricante Electrónico  NEC [NEC]
Página de inicio  http://www.nec.com/
Logo NEC - NEC

UPD720122 Datasheet(HTML) 14 Page - NEC

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Data Sheet S16685EJ2V0DS
14
µPD720122
2.5
DC Characteristics
The DC characteristics are classified into those of the USB interface and those of the BIU block.
2.5.1
DC characteristics of USB interface
Parameter
Symbol
Conditions
Min.
Max.
Unit
Serial resistor between DP (DM) and RSDP (RSDM)
RS
35.64
36.36
Ω
Driver output resistance
(also serves as high-speed termination)
ZHSDRV
Includes RS resistor
40.5
49.5
Ω
Bus pull-up resistor on upstream facing port
RPU
1.425
1.575
Ω
Termination voltage for upstream facing port pull-up
(full-speed)
VTERM
3.0
3.6
V
Input levels for full-speed:
High-level input voltage (driven)
VIH
2.0
V
High-level input voltage (floating)
VIHZ
2.7
3.6
Low-level input voltage
VIL
0.8
V
Differential input sensitivity
VDI
 (D+) − (D−) 
0.2
V
Differential common mode range
VCM
Includes VDI range
0.8
2.5
V
Output levels for full-speed:
High-level output voltage
VOH
RL of 14.25 k
Ω to VSS
2.8
3.6
V
Low-level output voltage
VOL
RL of 1.425 k
Ω to 3.6 V
0.0
0.3
V
SE1
VOSE1
0.8
V
Output signal crossover voltage
VCRS
1.3
2.0
V
Input levels for high-speed:
High-speed squelch detection threshold (differential
signal amplitude)
VHSSQ
100
150
mV
High-speed disconnect detection threshold
(differential signal amplitude)
VHSDSC
525
625
mV
High-speed data signaling common mode voltage
range (guideline for receiver)
VHSCM
−50
500
mV
High-speed differential input signaling level
See Figure 2-4
Output levels for high-speed:
High-speed idle level
VHSOI
−10.0
10
mV
High-speed data signaling high
VHSOH
360
440
mV
High-speed data signaling low
VHSOL
−10.0
10
mV
Chirp J level (different voltage)
VCHIRPJ
700
1100
mV
Chirp K level (different voltage)
VCHIRPK
−900
−500
mV



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