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PCK940LBD,128

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
PCK940L_1 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet Rev. 01 — 4 April 2006 7 of 16
Philips Semiconductors
PCK940L
Low voltage 1 : 18 clock distribution chip
[1] Tested using standard input levels, production tested at 150 MHz.
[2] Across temperature and voltage ranges, includes output skew.
[3] For a specific temperature and voltage, includes output skew.
Table 10. Dynamic characteristics (3.3 V V
CC
, 2.5 V output)
T
amb
=0
°
Cto70
°
C; V
CC2
= 3.3 V
±
5 %; V
CC1
= 2.5 V
±
5%
Symbol Parameter Conditions Min Typ Max Unit
f
oper(max)
maximum operating frequency - - 250 MHz
t
PLH
LOW-to-HIGH propagation
delay
PECL_CLK ≤ 150 MHz
[1]
2.0 2.8 4.0 ns
LVCMOS_CLK ≤ 150 MHz
[1]
1.7 2.5 3.0 ns
PECL_CLK > 150 MHz 2.0 2.9 4.0 ns
LVCMOS_CLK > 150 MHz 1.8 2.5 3.3 ns
t
sk(o)
output skew time output-to-output
PECL_CLK
[1]
- - 300 ps
LVCMOS_CLK
[1]
- - 150 ps
t
sk(pr)
process skew time part-to-part
PECL_CLK < 150 MHz
[1][2]
- - 1.5 ns
LVCMOS_CLK < 150 MHz
[1][2]
- - 1.3 ns
PECL_CLK > 150 MHz
[1][2]
- - 1.8 ns
LVCMOS_CLK > 150 MHz
[1][2]
- - 1.5 ns
PECL_CLK
[1][3]
- - 850 ps
LVCMOS_CLK
[1][3]
- - 750 ps
δ
o
output duty cycle LCVMOS_CLK; input δ =50%
f
clk
< 134 MHz 45 50 55 %
f
clk
≤ 250 MHz 40 50 60 %
PECL_CLK; input δ =50%
f
clk
< 134 MHz 35 50 65 %
f
clk
≤ 250 MHz 40 50 60 %
t
r
rise time output; from 0.5 V to 1.8 V 0.3 - 1.2 ns
t
f
fall time output; from 1.8 V to 0.5 V 0.3 - 1.2 ns
PCK940L_1 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet Rev. 01 — 4 April 2006 8 of 16
Philips Semiconductors
PCK940L
Low voltage 1 : 18 clock distribution chip
[1] Tested using standard input levels, production tested at 150 MHz.
[2] Across temperature and voltage ranges, includes output skew.
[3] For a specific temperature and voltage, includes output skew.
Table 11. Dynamic characteristics (2.5 V V
CC
, 2.5 V output)
T
amb
=0
°
Cto70
°
C; V
CC2
= 2.5 V
±
5 %; V
CC1
= 2.5 V
±
5%
Symbol Parameter Conditions Min Typ Max Unit
f
oper(max)
maximum operating frequency - - 200 MHz
t
PLH
LOW-to-HIGH propagation
delay
PECL_CLK ≤ 150 MHz
[1]
2.6 4.0 5.2 ns
LVCMOS_CLK ≤ 150 MHz
[1]
2.3 3.1 4.0 ns
PECL_CLK > 150 MHz 2.8 3.8 5.0 ns
LVCMOS_CLK > 150 MHz 2.3 3.1 4.0 ns
t
sk(o)
output skew time output-to-output
PECL_CLK
[1]
- - 300 ps
LVCMOS_CLK
[1]
- - 200 ps
t
sk(pr)
process skew time part-to-part
PECL_CLK < 150 MHz
[1][2]
- - 2.6 ns
LVCMOS_CLK < 150 MHz
[1][2]
- - 1.7 ns
PECL_CLK > 150 MHz
[1][2]
- - 2.2 ns
LVCMOS_CLK > 150 MHz
[1][2]
- - 1.7 ns
PECL_CLK
[1][3]
- - 1.2 ns
LVCMOS_CLK
[1][3]
- - 1.0 ns
δ
o
output duty cycle LCVMOS_CLK; input δ =50%
f
clk
< 134 MHz 45 50 55 %
f
clk
≤ 250 MHz 40 50 60 %
PECL_CLK; input δ =50%
f
clk
< 134 MHz 35 50 65 %
f
clk
≤ 250 MHz 40 50 60 %
t
r
rise time output; from 0.5 V to 1.8 V 0.3 - 1.2 ns
t
f
fall time output; from 1.8 V to 0.5 V 0.3 - 1.2 ns
PCK940L_1 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet Rev. 01 — 4 April 2006 9 of 16
Philips Semiconductors
PCK940L
Low voltage 1 : 18 clock distribution chip
9.1 Timing diagrams
Fig 3. Propagation delay (t
PD
) test reference Fig 4. LVCMOS_CLK propagation delay (t
PD
) test
reference
The time from the PLL controlled edge to the
non-controlled edge, divided by the time between
PLL controlled edges, expressed as a percentage.
The pin-to-pin skew is defined as the worst-case
difference in propagation delay between any two
similar delay paths within a single device.
Fig 5. Output duty cycle Fig 6. Output-to-output skew
(1) output 2.4 V; input 2.0 V (V
CC
= 3.3 V)
output 1.8 V; input 1.7 V (V
CC
= 2.5 V)
(2) output 0.55 V; input 0.8 V (V
CC
= 3.3 V)
output 0.6 V; input 0.7 V (V
CC
= 2.5 V)
Fig 7. Transition time test reference
002aab893
t
PD
PECL_CLK
Qn
V
ICR
V
CC
0.5V
CC
GND
PECL_CLK
V
i(p-p)
002aab892
t
PD
LVCMOS_CLK
Qn
V
CC
0.5V
CC
GND
V
CC
0.5V
CC
GND
002aab291
t
p
V
CC
0.5V
CC
GND
T
o
δ
o
= (t
p
÷ T
o
× 100 %)
002aab891
t
sk(o)
V
CC
0.5V
CC
GND
V
CC
0.5V
CC
GND
002aab292
t
f
(1)
(2)
t
r
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

PCK940LBD,128

Mfr. #:
Buy PCK940LBD,128
Manufacturer:
NXP Semiconductors
Description:
IC CLK BUFFER 1:18 250MHZ 32LQFP
Lifecycle:
New from this manufacturer.
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