P R E L I M I N A R Y
Test Conditions
Parameter
Symbol
Parameter Description
Min
-
Max
40
Unit
ns
t
Clock to High Impedance Output
SSDOZ
t
DIR going HIGH to SDATA Input Valid
DIR going LOW to SDATA Output Valid
(Note 7)
(Note 7)
-50
100
100
150
ns
SDS
t
ns
DDS
Notes:
1. Parameter is not tested.
2. Uses switching test load.
3. PDO pulses narrower than tPWODO (min) will be rejected; PDO pulses wider than tPWODO (max) will turn internal PDO carrier
sense on.
4. PDO pulses narrower than tPWKDO (min) will maintain internal PDO carrier sense on; PDO pulses longer thantPWKDO (max)
will turn internal PDO carrier sense off.
5. RXD pulses narrower than tPWORD (min) will be rejected; RXD pulses longer than tPWORD (max) will turn internal RXD carrier
sense on.
6. RXD pulses narrower than tPWKRD (min) will maintain internal RXD carrier sense; RXD pulses longer thantPWKRD (max) will
turn internal RXD carrier sense off.
7. Parameter tested functionally.
Am79C988A
19
AMD [ AMD ]
