Rainbow Electronics DS2705 User Manual
Page 4
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