CY7C371
7c371: Tuesday, May 26, 1992
Revision: August 9, 1995
5
Switching Characteristics Over the Operating Range[6] (continued)
7C371-143
7C371-110
7C371-83
7C371L-83
7C371-66
7C371L-66
Parameter
Description
Min. Max. Min. Max. Min. Max. Min. Max. Unit
Output Registered/Latched Mode Parameters
tCO
Clock or Latch Enable to Output
6
6.5
10
12
ns
tS
SetUp Time from Input to Clock or Latch
Enable
5
6
10
12
ns
tH
Register or Latch Data Hold Time
0
0
0
0
ns
tCO2
Output Clock or Latch Enable to Output Delay
(Through Memory Array)
12
14
19
24
ns
tSCS
Output Clock or Latch Enable to Output Clock or
Latch Enable (Through Memory Array)
7
9
12
15
ns
tSCS2
Output Clock Through Array to Output Clock
(2Pass Delay)[4]
13
16.5
21
27
ns
tSL
SetUp Time from Input Through Transparent
Latch to Output Register Clock or Latch Enable
9
10
12
15
ns
tHL
Hold Time for Input Through Transparent Latch
from Output Register Clock or Latch Enable
0
0
0
0
ns
fMAX1
Maximum Frequency with Internal Feedback
(Least of 1/tSCS, 1/(tS + tH), or 1/tCO)[4]
143
111
83.3
66.6
MHz
fMAX2
Maximum Frequency Data Path in Output Regis
tered/Latched Mode (Lesser of 1/(tWL + tWH),
1/(tS + tH), or 1/tCO)[4]
166.7
153.8
100
83.3
MHz
fMAX3
Maximum Frequency with external feedback
(Lesser of 1/(tCO + tS) and 1/(tWL + tWH))[4]
91
80
50
41.6
MHz
tOH-tIH
37x
Output Data Stable from Output clock Minus
Input Register Hold Time for 7C37x[4, 8]
0
0
0
0
ns
Pipelined Mode Parameters
tICS
Input Register Clock to Output Register Clock
7
9
12
15
ns
fMAX4
Maximum Frequency in Pipelined Mode (Least of
1/(tCO + tIS), 1/tICS, 1/(tWL + tWH), 1/(tIS + tIH),
or 1/tSCS)
125
111
76.9
62.5
MHz
Reset/Preset Parameters
tRW
Asynchronous Reset Width[4]
8
10
15
20
ns
tRR
Asynchronous Reset Recovery Time[4]
10
12
17
22
ns
tRO
Asynchronous Reset to Output
14
16
21
26
ns
tPW
Asynchronous Preset Width[4]
8
10
15
20
ns
tPR
Asynchronous Preset Recovery Time[4]
10
12
17
22
ns
tPO
Asynchronous Preset to Output
14
16
21
26
ns
tPOR
PowerOn Reset[4]
1
1
1
1
ms
Shaded area contains preliminary information.
Switching Waveforms
Combinatorial Output
tPD
7c37111
INPUT
COMBINATORIAL
OUTPUT
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