Philips Semiconductors

ISP1107

Advanced USB transceiver

Objective specification

Rev. 01 — 23 February 2000

9 of 19

9397 750 06899

© Philips Electronics N.V. 2000. All rights reserved.

[1]

Includes external resistors of 33

Ω±1% on both D+ and D−.

[2]

Includes external resistors of 39

Ω±1% on both D+ and D−. This range complies with Universal Serial Bus Specification Rev. 2.0.

[3]

[4]

In ‘suspend’ mode the minimum voltage is 2.7 V.

10. Dynamic characteristics

Capacitance

transceiver capacitance

pin to GND

-

-

20

pF

Resistance

driver output impedance

steady-state drive

[1] 34

39

44

Ω

driver output impedance for

USB 2.0

steady-state drive

[2] 41

45

49

Ω

input impedance

10

-

-

M

Ω

internal switch resistance at

--10

Ω

Termination

VTERM [3]

termination voltage for

3.0 [4]

-

3.6

V

Table 11: Static characteristics: analog I/O pins (D

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 12: Dynamic characteristics: analog I/O pins (D

+, D−) [1]

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Driver characteristics

Full-speed mode

rise time

10 to 90% of

see Figure 4

4

-

20

ns

fall time

90 to 10% of

see Figure 4

4

-

20

ns

FRFM

differential rise/fall time

excluding the first transition

from Idle state

90

-

111.1

%

output signal crossover

voltage

excluding the first transition

from Idle state; see Figure 7

[2] 1.3

-

2.0

V

Low-speed mode

rise time

10 to 90% of

see Figure 4

75

-

300

ns

fall time

90 to 10% of

see Figure 4

75

-

300

ns

LRFM

differential rise/fall time

excluding the first transition

from Idle state

80

-

125

%