VMV3 datasheet(93/212 Pages) MICROSEMI

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Military ProASIC3/EL Low Power Flash FPGAs

Revision 3

2-79

2.5 V GTL+

Gunning Transceiver Logic Plus is a high-speed bus standard (JESD8-3). It provides a differential

amplifier input buffer and an open-drain output buffer. The VCCI pin should be connected to 2.5 V.

Timing Characteristics

Table 2-131 • Minimum and Maximum DC Input and Output Levels

2.5 V GTL+

VIL

VIH

VOL

VOH

IOL IOH

IOSL

IOSH

IIL1 IIH2

Drive

Strength

Min.

Max.

Min.

Max.

Min.

VmA mA

Max.

mA3

Max.

mA3

µA4 µA4

33 mA

–0.3

VREF – 0.1

VREF + 0.1

3.6

0.6

–

33 33

169

124

Notes:

1. IIL is the input leakage current per I/O pin over recommended operating conditions where –0.3 V < VIN < VIL.

2. IIH is the input leakage current per I/O pin over recommended operating conditions VIH < VIN < VCCI. Input current is

larger when operating outside recommended ranges.

3. Currents are measured at 100°C junction temperature and maximum voltage.

4. Currents are measured at 125°C junction temperature.

Figure 2-19 • AC Loading

Table 2-132 • AC Waveforms, Measuring Points, and Capacitive Loads

Input Low (V)

Input High (V)

Measuring

Point* (V)

VREF (typ.) (V)

VTT (typ.) (V)

CLOAD (pF)

VREF – 0.1

VREF + 0.1

1.0

1.5

Note:

*Measuring point = Vtrip. See Table 2-28 on page 2-27 for a complete table of trip points.

Test Point

10 pF

GTL+

VTT

Table 2-133 • 2.5 V GTL+

Military-Case Conditions: TJ = 125°C, Worst-Case VCC = 1.14 V,

Worst-Case VCCI = 2.3 V, VREF = 1.0 V

Applicable to Pro I/Os for A3PE600L and A3PE3000L Only

Speed

Grade

tDOUT

tDP

tDIN

tPY

tEOUT

tZL

tZH

tLZ

tHZ

tZLS

tZHS

Units

Std.

0.80

2.19

0.05

2.27

0.52

2.22

2.08

–

4.43

4.28

–1

0.68

1.86

0.05

1.93

0.44

1.89

1.77

–

3.77

3.64

Note:

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

Table 2-134 • 2.5 V GTL+

Military-Case Conditions: TJ = 125°C, VCC = 1.425 V,

Worst-Case VCCI = 2.3 V, VREF = 1.0 V

Applicable to Pro I/Os for A3PE600L and A3PE3000L Only

Speed

Grade

tDOUT

tDP

tDIN

tPY

tEOUT

tZL

tZH

tLZ

tHZ

tZLS

tZHS

Units

Std.

0.61

2.05

0.04

2.04

0.40

2.07

1.99

–

3.53

3.46

–1

0.52

1.75

0.03

1.73

0.34

1.76

1.69

–

3.00

2.94

Note:

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

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