11257-801 AMI Semiconductor, Inc., 11257-801 Datasheet - Page 11

• Manufacturer Part Number: 11257-801
• Description: Low-Skew Clock Fanout Buffer ICs
• Manufacturer: AMI Semiconductor, Inc.

January 1999
Table 10: AC Timing Specifications
Unless otherwise stated, all power supplies = 3.3V ± 5%, no load on any output, and ambient temperature range T
characterization data and are not currently production tested to any specific limits. MIN and MAX characterization data are
Overall
Clock Outputs (SDRAM_0:17 3.3V Type 4 Clock Buffer)
Clock Skew, Maximum;
SDRAM_0 to any SDRAM pin *
Propagation Delay, Average;
CLK_IN to any SDRAM pin *
Rise Time *
Fall Time *
Clock High Time *
Clock Low Time *
Duty Cycle *
Tristate Enable Delay *
Tristate Disable Delay *
PARAMETER
SYMBOL
t
t
t
t
t
t
PLH(max)
PHL(max)
t
t
PLH(min)
PHL(min)
KH(max)
t
t
KH(min)
KL(max)
t
t
KL(min)
t
t
r(max)
f(max)
t
t
t
r(min)
f(min)
PZH
PHZ
PZL
PLZ
skw
Measured on the rising edge at 1.5V;
C
Measured on the rising edge at 1.5V;
C
Measured on the rising edge at 1.5V;
C
Measured on the rising edge at 1.5V;
C
Measured on the rising edge at 1.5V;
C
V
V
V
V
V
V
V
V
From rising edge to rising edge at
1.5V; C
From rising edge to rising edge at
1.5V; C
Output tristated to output active; C
Output active to output tristated; C
L
L
L
L
L
O
O
O
O
O
O
O
O
= 20pF
= 20pF
= 30pF
= 20pF
= 30pF
= 0.4V to 2.4V; C
= 0.4V to 2.4V; C
= 2.4V to 0.4V; C
= 2.4V to 0.4V; C
= 2.4V; C
= 2.4V; C
= 0.4V; C
= 0.4V; C
CONDITIONS/DESCRIPTION
L
L
= 20pF
= 30pF
L
L
L
L
= 20pF
= 30pF
= 20pF
= 30pF
11
L
L
L
L
= 20pF
= 30pF
= 20pF
= 30pF
L
L
A
= 20pF
= 20pF
= 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal
3 from typical.
CLOCK
(MHz)
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
66.67
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
MIN.
TYP.
182
228
3.7
3.8
3.7
4.0
3.9
3.8
4.2
4.0
1.0
0.9
1.2
1.0
1.0
0.7
1.1
0.8
6.5
3.8
6.5
3.8
6.5
4.6
6.3
4.5
4.7
4.6
6.3
7.9
49
45
50
46
MAX.
UNITS
1.13.99
ps
ns
ns
ns
ns
ns
ns
ns
%