PCK946 datasheet(5/13 Pages) NXP

5 / 13 page

9397 750 12296

Product data sheet

Rev. 01 — 13 December 2005

5 of 13

Philips Semiconductors

PCK946

Low voltage 1 : 10 CMOS clock driver

Static characteristics

[1]

The PCK946 can drive 50

Ω transmission lines on the incident edge. Each output can drive one 50 Ω parallel terminated transmission

line to the termination voltage of VT = 0.5VCC. Alternately, the device drives up to two 50 Ω series terminated transmission lines.

[2]

II current is a result of internal pull-up/pull-down resistors.

Dynamic characteristics

[1]

Driving 50

Ω transmission lines.

[2]

Termination is 50

Ω to 0.5VCC.

[3]

Part-to-part skew at a given temperature and voltage.

Table 7:

Static characteristics

Tamb =0 °Cto+70 °C; VCC = 3.3 V ± 0.3 V

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIH

HIGH-state input voltage

2.0

3.6

VIL

LOW-state input voltage

0.8

VOH

HIGH-state output voltage

IOH = −20 mA

[1] 2.5

VOL

LOW-state output voltage

IOL =20mA

[1] -

0.4

input current

[2] --

±120

µA

input capacitance

CPD

power dissipation capacitance

per output

Iq(max)

maximum quiescent supply current

Table 8:

Dynamic characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fmax

maximum input clock frequency

[1] 150

MHz

tPLH

LOW-to-HIGH propagation delay

TCLK to Qn

[1] [2] 4.5

7.5

11.5

tPHL

HIGH-to-LOW propagation delay

TCLK to Qn

[1] [2] 4.5

7.5

11.5

tsk(o)

output skew time

output-to-output

[1] [2]

fmax < 100 MHz;

same frequency outputs

350

fmax < 100 MHz;

different frequency outputs

350

fmax > 100 MHz;

same frequency outputs

350

fmax > 100 MHz;

different frequency outputs

450

tsk(pr)

process skew time

part-to-part

[3] -

2.0

4.5

tPZL

OFF-state to LOW propagation delay

[2] -

tPZH

OFF-state to HIGH propagation delay

[2] -

tPLZ

LOW to OFF-state propagation delay

[2] -

tPHZ

HIGH to OFF-state propagation delay

[2] -

rise time

output; 0.8 V to 2.0 V

[2] 0.1

0.5

1.0

fall time

output; 2.0 V to 0.8 V

[2] 0.1

0.5

1.0

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