MT9044AP Ver la hoja de datos (PDF) - Mitel Networks

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componentes Descripción

fabricante

MT9044AP

T1/E1/OC3 System Synchronizer

Mitel Networks 

MT9044

Advance Information

AC Electrical Characteristics - Performance

Characteristics

Sym Min Max Units Conditions/Notes†

1 Freerun Mode accuracy with OSCi at: ±±0ppm

2

±32ppm

3

±100ppm

4 Holdover Mode accuracy with OSCi at: ±0ppm

5

±32ppm

6

±100ppm

7 Capture range with OSCi at:

±0ppm

8

±32ppm

9

±100ppm

10 Phase lock time

11 Output phase continuity with: reference switch

12

mode switch to Normal

13

mode switch to Freerun

14

mode switch to Holdover

15 MTIE (maximum time interval error)

16 Output phase slope

17 Reference input for Auto-Holdover with: 8kHz

18

1.544MHz

19

2.048MHz

† See "Notes" following AC Electrical Characteristics tables.

-0

+0 ppm 5-8

-32 +32 ppm 5-8

-100 +100 ppm 5-8

-0.05 +0.05 ppm 1,2,4,6-8,40

-0.05 +0.05 ppm 1,2,4,6-8,40

-0.05 +0.05 ppm 1,2,4,6-8,40

-230 +230 ppm 1-3,6-8

-198 +198 ppm 1-3,6-8

-130 +130 ppm 1-3,6-8

30

s 1-3,6-14

200 ns 1-3,6-14

200 ns 1-2,4-14

200 ns 1-,4,6-14

50

ns 1-3,6-14

600 ns 1-14,27

45 us/s 1-14,27

-18k +18k ppm 1-3,6,9-11

-36k +36k ppm 1-3,7,9-11

-36k +36k ppm 1-3,8-11

AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels* - Voltages are

with respect to ground (VSS) unless otherwise stated.

Characteristics

Sym Schmitt

TTL

CMOS Units

1 Threshold Voltage

VT

1.5

1.5

0.5VDD

V

2 Rise and Fall Threshold Voltage High

VHM

2.3

2.0

0.7VDD

V

3 Rise and Fall Threshold Voltage Low

VLM

0.8

0.8

0.3VDD

V

* Supply voltage and operating temperature are as per Recommended Operating Conditions.

* Timing for input and output signals is based on the worst case result of the combination of TTL and CMOS thresholds.

* See Figure 18.

ALL SIGNALS

tIRF, tORF

Timing Reference Points

tIRF, tORF

VHM

VT

VLM

Figure 18 - Timing Parameter Measurement Voltage Levels

22

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