MT89L80AN Просмотр технического описания (PDF) - Mitel Networks

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MT89L80AN

CMOS ST-BUS™ FAMILY Digital Switch

Mitel Networks 

Advance Information

MT89L80

AC Electrical Characteristics† - Serial Streams (Figures 11, 12 and 13)

Characteristics

Sym Min Typ‡ Max Units

Test Conditions

1 O STo0/7 Delay - Active to High Z tSAZ

5

2

U

T

STo0/7 Delay - High Z to Active

tSZA

5

3 P STo0/7 Delay - Active to Active tSAA

5

4

U

T

Output Driver Enable Delay

tOED

5 S External Control Delay

tXCD

55

ns RL=1 KΩ*, CL=150 pF

55

ns CL=150 pF

55

ns CL=150 pF

50

ns RL=1 KΩ*, CL=150 pF

55

ns CL=150 pF

6 I Serial Input Setup Time

tSIS

20

ns

7 N Serial Input Hold Time

tSIH

20

ns

† Timing is over recommended temperature & power supply voltages.

‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.

* High Impedance is measured by pulling to the appropriate rail with RL, with timing corrected to cancel time taken to discharge CL.

VHM

C4i VLM

Bit Cell Boundary

ODE VHM

VLM

STo0 VHM

to

STo7

VLM

STo0 VHM

to

*

STo7 VLM

*

tSAZ

tSZA

STo0 VHM

to

STo7

VLM

tSAA

VHM

CSTo VLM

tXCD

Figure 11 - Serial Outputs and External Control

STo0 VHM

to

STo7 VLM

*

tOED

*

tOED

Figure 12 - Output Driver Enable

VHM

C4i VLM

STi0 VHM

to

STi7

VLM

Bit Cell Boundaries

tSIH

tSIS

Figure 13 - Serial Inputs

2-13

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