CY7C374i
7
Switching Characteristics Over the Operating Range[14]
7C374i–125
7C374i–100
7C374i–83
7C374i–66
7C374iL–66
Parameter
Description
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
Combinatorial Mode Parameters
tPD
Input to Combinatorial Output[1]
10
12
15
20
ns
tPDL
Input to Output Through Transparent Input or
Output Latch[1]
13
15
18
22
ns
tPDLL
Input to Output Through Transparent Input
and Output Latches[1]
15
16
19
24
ns
tEA
Input to Output Enable[1]
14
16
19
24
ns
tER
Input to Output Disable
14
16
19
24
ns
Input Registered/Latched Mode Parameters
tWL
Clock or Latch Enable Input LOW Time[9]
3
3
4
5
ns
tWH
Clock or Latch Enable Input HIGH Time[9]
3
3
4
5
ns
tIS
Input Register or Latch Set-Up Time
2
2
3
4
ns
tIH
Input Register or Latch Hold Time
2
2
3
4
ns
tICO
Input Register Clock or Latch Enable to Com-
binatorial Output[1]
14
16
19
24
ns
tICOL
Input Register Clock or Latch Enable to Out-
put Through Transparent Output Latch[1]
16
18
21
26
ns
Output Registered/Latched Mode Parameters
tCO
Clock or Latch Enable to Output[1]
6.5
7
8
10
ns
tS
Set-Up Time from Input to Clock or Latch En-
able
5.5
6
8
10
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)[1]
14
16
19
24
ns
tSCS
Output Clock or Latch Enable to Output Clock
or Latch Enable (Through Memory Array)
8
10
12
15
ns
tSL
Set-Up Time from Input Through Transparent
Latch to Output Register Clock or Latch En-
able
10
12
15
20
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)
[9]
125
100
83
66
MHz
fMAX2
Maximum Frequency Data Path in Output
Registered/Latched Mode (Lesser of 1/(tWL +
tWH), 1/(tS + tH), or 1/tCO)
158.3
143
125
100
MHz
fMAX3
Maximum Frequency with External Feedback
(Lesser of 1/(tCO + tS) and 1/(tWL + tWH))
83.3
76.9
67.5
50
MHz
tOH–tIH
37x
Output Data Stable from Output Clock Minus
Input Register Hold Time for 7C37x[9, 15]
0
0
0
0
ns
Pipelined Mode Parameters
tICS
Input Register Clock to Output Register Clock
8
10
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
100
83.3
66.6
MHz
Notes:
14. All AC parameters are measured with 16 outputs switching and 35-pF AC Test Load.
15. This specification is intended to guarantee interface compatibility of the other members of the CY7C370i family with the CY7C374i. This specification is met
for the devices operating at the same ambient temperature and at the same power supply voltage.