Owner's manual

DS2705: SHA-1 Authentication Master
4 of 18
AC ELECTRICAL CHARACTERISTICS: SLAVE 1-Wire INTERFACE
(2.5V £ V
DD
£ 5.5V, T
A
= -20°C to +85°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STANDARD BUS TIMING
Time Slot t
SLOT
60 120
ms
Recovery Time t
REC
1
ms
Write-0 Low Time t
LOW0
60 120
ms
Write-1 Low Time t
LOW1
1 15
ms
Read-Data Valid t
RDV
15
ms
Reset-Time High t
RSTH
480
ms
Reset-Time Low t
RSTL
480 960
ms
Presence-Detect High t
PDH
15 60
ms
Presence-Detect Low t
PDL
60 240
ms
OVERDRIVE BUS TIMING
Time Slot t
SLOT
6 16
ms
Recovery Time t
REC
1
ms
Write-0 Low Time t
LOW0
6 16
ms
Write-1 Low Time t
LOW1
1 2
ms
Read-Data Valid t
RDV
2
ms
Reset-Time High t
RSTH
48
ms
Reset-Time Low t
RSTL
48 80
ms
Presence-Detect High t
PDH
2 6
ms
Presence-Detect Low t
PDL
8 24
ms