IO96PDB2V1 datasheet(112/242 Pages) MICROSEMI

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ProASIC3L DC and Switching Characteristics

2-96

Revision 13

SSTL2 Class II

Stub-Speed Terminated Logic for 2.5 V memory bus standard (JESD8-9). ProASIC3E devices support

Class II. This provides a differential amplifier input buffer and a push-pull output buffer.

Timing Characteristics

Table 2-162 • Minimum and Maximum DC Input and Output Levels

SSTL2 Class II

VIL

VIH

VOL

VOH

IOL IOH IOSL

IOSH

IIL IIH

Drive

Strength

Min.

Max.

Min.

Max.

Min.

VmA mA

Max.

mA1

Max.

mA1

µA2 µA2

18 mA

–0.3 VREF – 0.2 VREF + 0.2

2.7

0.35

VCCI – 0.43 18 18

169

124

10 10

Notes:

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

2. Currents are measured at 85°C junction temperature.

Figure 2-20 • AC Loading

Table 2-163 • 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 – 0.2

VREF + 0.2

1.25

Note: *Measuring point = Vtrip. See Table 2-16 on page 2-12 for a complete table of trip points.

Test Point

30 pF

SSTL2

Class II

VTT

Table 2-164 • SSTL2 Class II – Applies to 1.5 V DC Core Voltage

Commercial-Case Conditions: TJ = 70°C, Worst-Case VCC = 1.425 V,

Worst-Case VCCI = 2.3 V VREF = 1.25 V

Applicable to Pro I/O Banks

Speed

Grade

tDOUT

tDP

tDIN

tPY

tEOUT

tZL

tZH

tLZ

tHZ

tZLS

tZHS

Units

Std.

0.59

1.95

0.04

1.89

0.38

1.99

1.59

1.99

1.59

–1

0.50

1.66

0.03

1.61

0.33

1.69

1.36

1.69

1.36

Note: For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-7 for derating values.

Table 2-165 • SSTL2 Class II – Applies to 1.2 V DC Core Voltage

Commercial-Case Conditions: TJ = 70°C, Worst-Case VCC = 1.14 V,

Worst-Case VCCI = 2.3 V VREF = 1.25 V

Applicable to Pro I/O Banks

Speed

Grade

tDOUT

tDP

tDIN

tPY

tEOUT

tZL

tZH

tLZ

tHZ

tZLS

tZHS

Units

Std.

0.77

1.95

0.05

1.89

0.50

1.99

1.59

1.99

1.59

–1

0.66

1.66

0.04

1.61

0.43

1.69

1.36

1.69

1.36

Note: For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-7 for derating values.

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