TS3USB221_17 datasheet(6/27 Pages) TI1

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TS3USB221

SCDS220I – NOVEMBER 2006 – REVISED JANUARY 2016

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6.6 Dynamic Electrical Characteristics, VCC = 3.3 V ± 10%

over operating range, TA = –40°C to 85°C, VCC = 3.3 V ± 10%, GND = 0 V

PARAMETER

TEST CONDITIONS

TYP(1)

UNIT

XTALK

Crosstalk

RL = 50 Ω, f = 250 MHz

–40

OIRR

OFF isolation

RL = 50 Ω, f = 250 MHz

–41

Bandwidth (–3 dB)

RL = 50 Ω

1.1

GHz

(1)

For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.

6.7 Dynamic Electrical Characteristics, VCC = 2.5 V ± 10%

over operating range, TA = –40°C to 85°C, VCC = 2.5 V ± 10%, GND = 0 V

PARAMETER

TEST CONDITIONS

TYP(1)

UNIT

XTALK

Crosstalk

RL = 50 Ω, f = 250 MHz

–39

OIRR

OFF isolation

RL = 50 Ω, f = 250 MHz

–40

Bandwidth (–3 dB)

RL = 50 Ω

1.1

GHz

(1)

For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.

6.8 Switching Characteristics, VCC = 3.3 V ± 10%

over operating range, TA = –40°C to 85°C, VCC = 3.3 V ± 10%, GND = 0 V

PARAMETER

MIN

TYP(1)

MAX

UNIT

tpd

Propagation delay(2) (3)

0.25

S to D, nD

tON

Line enable time

OE to D, nD

S to D, nD

tOFF

Line disable time

OE to D, nD

tSK(O)

Output skew between center port to any other port(2)

0.1

0.2

tSK(P)

Skew between opposite transitions of the same output (tPHL – tPLH)

(2)

0.1

0.2

(1)

For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.

(2)

Specified by design

(3)

The bus switch contributes no propagational delay other than the RC delay of the on resistance of the switch and the load capacitance.

The time constant for the switch alone is of the order of 0.25 ns for 10-pF load. This time constant adds very little propagational delay to

the system because it is much smaller than the rise/fall times of typical driving signals. Propagational delay of the bus switch, when used

in a system, is determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.

6.9 Switching Characteristics, VCC = 2.5 V ± 10%

over operating range, TA = –40°C to 85°C, VCC = 2.5 V ± 10%, GND = 0 V

PARAMETER

MIN

TYP(1)

MAX

UNIT

tpd

Propagation delay(2) (3)

0.25

S to D, nD

tON

Line enable time

OE to D, nD

S to D, nD

tOFF

Line disable time

OE to D, nD

tSK(O)

Output skew between center port to any other port(2)

0.1

0.2

tSK(P)

Skew between opposite transitions of the same output (tPHL – tPLH)

(2)

0.1

0.2

(1)

For Maximum or Minimum conditions, use the appropriate value specified under Electrical Characteristics for the applicable device type.

(2)

Specified by design

(3)

The bus switch contributes no propagational delay other than the RC delay of the on resistance of the switch and the load capacitance.

The time constant for the switch alone is of the order of 0.25 ns for 10-pF load. The time constraint adds very little propagational delay

to the system because it is much smaller than the rise and fall times of typical driving signals. Propagational delay of the bus switch,

when used in a system, is determined by the driving circuit on the driving side of the switch and its interactions with the load on the

driven side.

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