PCK9448 datasheet(5/20 Pages) PHILIPS

5 / 20 page

9397 750 12534

Product data sheet

Rev. 01 — 29 November 2005

5 of 20

Philips Semiconductors

PCK9448

3.3 V/2.5 V LVCMOS 1 : 12 clock fan-out buffer

8.2 Static characteristics

[1]

VICR (DC) is the cross point of the differential input signal. Functional operation is obtained when the cross point is within the VICR range

and the input swing lies within the Vi(p-p) (DC) speciﬁcation.

[2]

The PCK9448 is capable of driving 50

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

transmission line to a termination voltage of VT. Alternatively, the device drives up to two 50 Ω series terminated transmission lines

(VCC = 3.3 V) or one 50 Ω series terminated transmission line (for VCC = 2.5 V).

[3]

Inputs have pull-down or pull-up resistors affecting the input current.

[4]

Iq(max) is the DC current consumption of the device with all outputs open and the input in its default state or open.

[1]

VICR (DC) is the cross point of the differential input signal. Functional operation is obtained when the cross point is within the VICR range

and the input swing lies within the Vi(p-p) (DC) speciﬁcation.

[2]

The PCK9448 is capable of driving 50

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

transmission line to a termination voltage of VT. Alternatively, the device drives one 50 Ω series terminated transmission line per output

at VCC = 2.5 V.

[3]

Inputs have pull-down or pull-up resistors affecting the input current.

[4]

Iq(max) is the DC current consumption of the device with all outputs open and the input in its default state or open.

Table 6:

Static characteristics (3.3 V)

Tamb = −40 °C to +85 °C; VCC = 3.3 V ± 5 %; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIH

HIGH-state input voltage

LVCMOS

2.0

VCC + 0.3

VIL

LOW-state input voltage

LVCMOS

−0.3

+0.8

VOH

HIGH-state output voltage

IOH = −24 mA

[2] 2.4

VOL

LOW-state output voltage

IOL =24mA

[2] -

0.55

IOL = 12 mA

0.30

Vi(p-p)

peak-to-peak input voltage (PCLK)

LVPECL

250

VICR [1]

common-mode input voltage range

(PCLK)

LVPECL

1.1

VCC − 0.6

output impedance

Ω

input current

VI =VCC or GND

[3] -

300

µA

Iq(max)

maximum quiescent current

all VCC pins

[4] -

2.0

Table 7:

Static characteristics (2.5 V)

Tamb = −40 °C to +85 °C; VCC = 2.5 V ± 5 %; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIH

HIGH-state input voltage

LVCMOS

1.7

VCC + 0.3

VIL

LOW-state input voltage

LVCMOS

−0.3

+0.7

VOH

HIGH-state output voltage

IOH = −15 mA

[2] 1.8

VOL

LOW-state output voltage

IOL = 15 mA

0.6

Vi(p-p)

peak-to-peak input voltage (PCLK)

LVPECL

250

VICR [1]

common-mode input voltage range

(PCLK)

LVPECL

1.0

VCC − 0.7

output impedance

Ω

input current

VI =VCC or GND

[3] -

300

µA

Iq(max)

maximum quiescent current

all VCC pins

[4] -

2.0

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