9397 750 12534 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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] V
ICR
(DC) is the cross point of the differential input signal. Functional operation is obtained when the cross point is within the V
ICR
range
and the input swing lies within the V
i(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 V
T
. Alternatively, the device drives up to two 50 Ω series terminated transmission lines
(V
CC
= 3.3 V) or one 50 Ω series terminated transmission line (for V
CC
= 2.5 V).
[3] Inputs have pull-down or pull-up resistors affecting the input current.
[4] I
q(max)
is the DC current consumption of the device with all outputs open and the input in its default state or open.
[1] V
ICR
(DC) is the cross point of the differential input signal. Functional operation is obtained when the cross point is within the V
ICR
range
and the input swing lies within the V
i(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 V
T
. Alternatively, the device drives one 50 Ω series terminated transmission line per output
at V
CC
= 2.5 V.
[3] Inputs have pull-down or pull-up resistors affecting the input current.
[4] I
q(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)
T
amb
=
−
40
°
C to +85
°
C; V
CC
= 3.3 V
±
5 %; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
IH
HIGH-state input voltage LVCMOS 2.0 - V
CC
+ 0.3 V
V
IL
LOW-state input voltage LVCMOS −0.3 - +0.8 V
V
OH
HIGH-state output voltage I
OH
= −24 mA
[2]
2.4 - - V
V
OL
LOW-state output voltage I
OL
=24mA
[2]
- - 0.55 V
I
OL
= 12 mA - - 0.30 V
V
i(p-p)
peak-to-peak input voltage (PCLK) LVPECL 250 - - mV
V
ICR
[1]
common-mode input voltage range
(PCLK)
LVPECL 1.1 - V
CC
− 0.6 V
Z
o
output impedance - 17 - Ω
I
I
input current V
I
=V
CC
or GND
[3]
- - 300 µA
I
q(max)
maximum quiescent current all V
CC
pins
[4]
- - 2.0 mA
Table 7: Static characteristics (2.5 V)
T
amb
=
−
40
°
C to +85
°
C; V
CC
= 2.5 V
±
5 %; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
IH
HIGH-state input voltage LVCMOS 1.7 - V
CC
+ 0.3 V
V
IL
LOW-state input voltage LVCMOS −0.3 - +0.7 V
V
OH
HIGH-state output voltage I
OH
= −15 mA
[2]
1.8 - - V
V
OL
LOW-state output voltage I
OL
= 15 mA - - 0.6 V
V
i(p-p)
peak-to-peak input voltage (PCLK) LVPECL 250 - - mV
V
ICR
[1]
common-mode input voltage range
(PCLK)
LVPECL 1.0 - V
CC
− 0.7 V
Z
o
output impedance - 19 - Ω
I
I
input current V
I
=V
CC
or GND
[3]
- - 300 µA
I
q(max)
maximum quiescent current all V
CC
pins
[4]
- - 2.0 mA