IO134PDB3V2 datasheet(44/212 Pages) MICROSEMI

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Military ProASIC3/EL DC and Switching Characteristics

2-30

Revision 3

Table 2-32 • Summary of I/O Timing Characteristics—Software Default Settings

–1 Speed Grade, Military-Case Conditions: TJ = 125°C, Worst Case VCC = 1.425 V,

Worst Case VCCI

Applicable to Advanced I/O Banks for A3P250 and A3P1000 Only

I/O Standard

3.3 V LVTTL /

3.3 V LVCMOS

12 mA

High

–

0.54 2.24 0.04 0.95 0.39 2.28 1.70 3.00 3.35 4.38 3.79

3.3 V LVCMOS

Wide Range3

100 µA

12 mA High

–

0.54 3.47 0.04 1.44 0.39 3.47 2.57 4.65 5.18 6.64 5.75

2.5 V LVCMOS

12 mA

12 mA High

–

0.54 2.26 0.04 1.23 0.39 2.30 1.89 3.09 3.22 4.39 3.99

1.8 V LVCMOS

12 mA

High

–

0.54 2.49 0.04 1.14 0.39 2.54 2.12 3.46 3.82 4.63 4.21

1.5 V LVCMOS

12 mA

High

–

0.54 2.85 0.04 1.35 0.39 2.90 2.45 3.69 3.93 4.99 4.55

3.3 V PCI

Per PCI

spec.

High 10

254 0.54 2.51 0.04 0.81 0.39 2.55 1.83 3.00 3.35 4.65 3.92

3.3 V PCI-X

Per PCI-X

spec.

High 10

25 4 0.54 2.51 0.04 0.78 0.39 2.55 1.83 3.00 3.35 4.65 3.92

LVDS

24 mA

High

–

0.54 1.76 0.04 1.55

–

LVPECL

24 mA

High

–

0.54 1.68 0.04 1.31

–

Notes:

1. Note that 3.3 V LVCMOS wide range is applicable to 100 µA drive strength only. The configuration will not operate at the

equivalent software default drive strength. These values are for normal ranges only.

2. Output delays provided in this table were extracted with an output load indicated in the Capacitive Load column. For a

specific output load, refer to Designer software. Software default load is higher.

3. All LVCMOS 3.3 V software macros support LVCMOS 3.3 V wide range as specified in the JESD8-B specification.

4. Resistance is used to measure I/O propagation delays as defined in PCI specifications. See Figure 2-15 on page 2-73 for

connectivity. This resistor is not required during normal operation.

5. For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-8 for derating values.

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