ISP1104 Просмотр технического описания (PDF) - Philips Electronics
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ISP1104 Datasheet PDF : 19 Pages
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Philips Semiconductors
ISP1104
Advanced USB transceiver
Table 13: Static characteristics: analog I/O pins D+ and D−…continued
VCC(5.0) = 4.0 V to 5.5 V; VGND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Capacitance
CIN
transceiver capacitance
Resistance
pin to GND
-
-
ZDRV
ZINP
RSW
Termination
driver output impedance
input impedance
internal switch resistance at
pin Vpu(3.3)
steady-state drive
[2] 34
39
10
-
-
-
VTERM
termination voltage for
upstream port pull-up (Rpu)
[3][4] 3.0
-
[1] VOH(min) = Vreg(3.3) − 0.2 V.
[2] Includes external resistors of 33 Ω ±1 % on both pins D+ and D−.
[3] This voltage is available at pins Vreg(3.3) and Vpu(3.3).
[4] The minimum voltage is 2.7 V in the suspend mode.
12. Dynamic characteristics
Max
Unit
20
pF
44
Ω
-
MΩ
10
Ω
3.6
V
Table 14: Dynamic characteristics: analog I/O pins D+ and D−
VCC(5.0) = 4.0 V to 5.5 V; VCC(I/O) = 1.65 V to 3.6 V; VGND = 0 V; Tamb = −40 °C to +85 °C; see Figure 8; unless otherwise
specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Driver characteristics
tFR
rise time
CL = 50 pF to 125 pF;
4
-
10 % to 90 % of |VOH − VOL|;
see Figure 4
20
ns
tFF
fall time
CL = 50 pF to 125 pF;
4
-
90 % to 10 % of |VOH − VOL|;
see Figure 4
20
ns
FRFM
differential rise/fall time
excluding the first transition
90
-
matching (tFR/tFF)
from idle state
VCRS
output signal crossover
excluding the first transition [1] 1.3
-
voltage
from idle state; see Figure 5
111.1
%
2.0
V
Driver timing
tPLH(drv)
driver propagation delay
LOW-to-HIGH; see Figure 5
-
-
18
ns
(VPO/VO, VMO/FSE0 to
D+, D−)
tPHL(drv)
driver propagation delay
HIGH-to-LOW; see Figure 5
-
-
18
ns
(VPO/VO, VMO/FSE0 to
D+, D−)
tPHZ
driver disable delay (OE to HIGH-to-OFF; see Figure 6
-
-
15
ns
D+, D−)
tPLZ
driver disable delay
LOW-to-OFF; see Figure 6
-
-
15
ns
(OE to D+, D−)
9397 750 11229
Product data
Rev. 02 — 14 October 2003
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
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