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ISP1122ABD 数据表(PDF) 32 Page - NXP Semiconductors

部件名 ISP1122ABD
功能描述  Universal Serial Bus stand-alone hub
PDF  48 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

ISP1122ABD 数据表(HTML) 32 Page - NXP Semiconductors

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Philips Semiconductors
ISP1122A
USB stand-alone hub
Preliminary specification
Rev. 01 — 27 March 2000
32 of 48
9397 750 06986
© Philips Electronics N.V. 2000. All rights reserved.
[1]
D
+ is the USB positive data pin (DPn); D− is the USB negative data pin (DMn).
[2]
Includes external resistors of 20
Ω±1% on both D+ and D−.
[3]
This voltage is available at pin Vreg(3.3).
[4]
In ‘suspend’ mode the minimum voltage is 2.7 V.
15. Dynamic characteristics
[1]
Dependent on the crystal oscillator start-up time.
Table 29: Static characteristics: analog I/O pins (D
+, D−) [1]
VCC = 4.0 to 5.5 V; VGND =0V; Tamb = −40 to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Input levels
VDI
differential input sensitivity
|V
I(D
+) − VI(D−)|
0.2
-
-
V
VCM
differential common mode
voltage
includes VDI range
0.8
-
2.5
V
VIL
LOW-level input voltage
-
-
0.8
V
VIH
HIGH-level input voltage
2.0
-
-
V
Output levels
VOL
LOW-level output voltage
RL = 1.5 kΩ to +3.6V
-
-
0.3
V
VOH
HIGH-level output voltage
RL =15kΩ to GND
2.8
-
3.6
V
Leakage current
ILZ
OFF-state leakage current
-
-
±10
µA
Capacitance
CIN
transceiver capacitance
pin to GND
-
-
20
pF
Resistance
ZDRV [2]
driver output impedance
steady-state drive
28
-
44
Ω
ZINP
input impedance
10
-
-
M
Ω
Termination
VTERM [3]
termination voltage for
upstream port pull-up (RPU)
3.0 [4]
-
3.6
V
Table 30: Dynamic characteristics
VCC = 4.0 to 5.5 V; VGND =0V; Tamb = −40 to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Reset
tW(RESET)
pulse width on input RESET
crystal oscillator running
10
-
-
µs
crystal oscillator stopped
-
2 [1]
-ms
Crystal oscillator
fXTAL
crystal frequency
-
6
-
MHz



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