DS1481 Datasheet, PDF (10/10 Pages) Dallas Semiconductor – 1.Wire Bus Master with Overdrive

DS1481
AC ELECTRICAL CHARACTERISTICS: HOST INTERFACE
PARAMETER
SYMBOL MIN
TYP
Sample Time
(for bit time slot, OD = 0)
t_SIO
8
(for bit time slot, OD = 1)
Recovery Time
Data to Enable Hold
Reset to Enable Hold
Clock low time
Clock low to O1, O2 valid
BSY1, BSY2 low time
(for bit time slot, OD = 0)
(OD = 1)
t_REC
1
t_DE
40
t_RE
40
t_CL
200
t_COV
t_BLB
60
6
BSY1, BSY2 low time
(for reset time slot, OD = 0)
(OD = 1)
t_BLR
960
96
NOTES:
1. All voltages are referenced to ground.
2. Measured with outputs open and I1, I2 high.
3. Minimum time required for 1–wire bit time slot.
4. Minimum time required for 1–wire reset time slot.
5. Only pins without pull–ups.
6. Overdrive mode only.
MAX
2
200
UNITS NOTES
µs
µs
µs
ns
ns
ns
µs
3
µs
4
021798 10/10