MT89L85AN データシートの表示（PDF） - Mitel Networks

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MT89L85AN

CMOS ST-BUS™ FAMILY Enhanced Digital Switch

Mitel Networks 

MT89L85

Advance Information

AC Electrical Characteristics† - Serial Streams for ST-BUS and GCI Backplanes

Characteristics

Sym Min Typ‡ Max Units

Test Conditions

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

U

2 T STo0/7 Delay - High Z to Active tSZA

P

3 U Output Driver Enable Delay

tOED

4

T

S

CSTo Output Delay

tXCD

55

ns RL=1 KΩ*, CL=150 pF

55

ns CL=150 pF

50

ns RL=1 KΩ*, CL=150 pF

55

ns CL=150 pF

† 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.

C4i VHM

VLM

Bit Cell Boundary

(GCI)

(ST-BUS)

STo0 VHM

to

STo7 VLM

STo0 VHM

to

*

STo7 VLM

VHM

CSTo

VLM

*

tSAZ

tSZA

tXCD

ODE VHM

VLM

STo0 VHM

to

STo7 VLM

*

tOED

*

tOED

Figure 15 - Output Driver Enable

Figure 14 - Serial Outputs and External Control

16

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