
Detailed Specifications
2- 34
R e visio n 3
A1460A, A14V60A Timing Characteristics
Table 2-30 A1460A, A14V60A Worst-Case Commercial Conditions, VCC = 4.75 V, TJ = 70°C
1
Logic Module Propagation Delays2
–3 Speed3
–2 Speed 3
–1 Speed
Std. Speed
3.3 V Speed1 Units
Parameter/Description
Min.
Max.
Min. Max. Min.
Max.
Min.
Max.
Min.
Max.
tPD
Internal Array Module
2.0
2.3
2.6
3.0
3.9
ns
tCO
Sequential Clock to Q
2.0
2.3
2.6
3.0
3.9
ns
tCLR
Asynchronous Clear to Q
2.0
2.3
2.6
3.0
3.9
ns
Predicted Routing Delays4
tRD1
FO = 1 Routing Delay
0.9
1.0
1.1
1.3
1.7
ns
tRD2
FO = 2 Routing Delay
1.2
1.4
1.6
1.8
2.4
ns
tRD3
FO = 3 Routing Delay
1.4
1.6
1.8
2.1
2.8
ns
tRD4
FO = 4 Routing Delay
1.7
1.9
2.2
2.5
3.3
ns
tRD8
FO = 8 Routing Delay
2.8
3.2
3.6
4.2
5.5
ns
Logic Module Sequential Timing
tSUD
Flip-Flop Data Input Setup
0.5
0.6
0.7
0.8
ns
tHD
Flip-Flop Data Input Hold
0.0
ns
tSUD
Latch Data Input Setup
0.5
0.6
0.7
0.8
ns
tHD
Latch Data Input Hold
0.0
ns
tWASYN Asynchronous Pulse Width
2.4
3.2
3.8
4.8
6.5
ns
tWCLKA Flip-Flop Clock Pulse Width
2.4
3.2
3.8
4.8
6.5
ns
tA
Flip-Flop Clock Input Period
5.0
6.8
8.0
10.0
13.4
ns
fMAX
Flip-Flop Clock Frequency
200
150
125
100
75
MHz
Notes:
1. VCC = 3.0 V for 3.3 V specifications.
2. For dual-module macros, use tPD + tRD1 + tPDn + tCO + tRD1 + tPDn or tPD1 + tRD1 + tSUD, whichever is appropriate.
4. Routing delays are for typical designs across worst-case operating conditions. These parameters should be used for
estimating device performance. Post-route timing analysis or simulation is required to determine actual worst-case
performance. Post-route timing is based on actual routing delay measurements performed on the device prior to
shipment.