DS2408 Maxim, DS2408 Datasheet - Page 3

• Manufacturer Part Number: DS2408
• Description: The DS2408 is an 8-channel, programmable I/O 1-Wire® chip
• Manufacturer: Maxim

I/O Pin, 1-Wire Reset, Presence-Detect Cycle
Reset-Low Time
(Notes 1, 12)
Presence-Detect High
Time (Note 12)
Presence-Detect Fall
Time (Note 13)
Presence-Detect Low
Time (Note 12)
Presence-Detect
Sample Time (Note 1)
I/O Pin, 1-Wire Write
Write-0 Low Time
(Notes 1, 12, 14)
Write-1 Low Time
(Notes 1, 12, 14)
Write Sample Time
(Slave Sampling)
(Note 12)
I/O Pin, 1-Wire Read
Read-Low Time
(Notes 1, 15)
Read-0 Low Time
(Data From Slave)
(Note 12)
Read-Sample Time
(Notes 1, 12, 15)
P0 to P7, RSTZ Pin
Input-Low Voltage
Input-High Voltage
Output-Low Voltage
at 4mA
Leakage Current
Output Fall Time
Minimum-Sensed
PIO Pulse
PARAMETER
SYMBOL
t
PWMIN
t
t
t
t
t
t
t
V
t
t
t
t
V
V
RSTL
t
I
FPIO
W0L
W1L
MSR
PDH
MSP
FPD
PDL
SPD
SLS
RL
LP
OL
IH
IL
Standard speed, V
4.5V
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed, V
4.5V
Standard speed
Overdrive speed
Standard speed, V
4.5V
Standard speed
Overdrive speed
Standard speed, V
4.5V
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
Standard speed
Overdrive speed
(Notes 1, 7)
V
(Note 1)
(Note 10)
5.25V at the pin
(Notes 4, 16)
(Notes 4, 17)
X
= max (V
CONDITIONS
3 of 39
PUP
,V
PUP
PUP
PUP
PUP
CC
)
>
>
>
>
V
t
t
MIN
RL
RL
X
480
660
100
1.8
1.8
53
15
60
60
65
68
60
15
15
2
1
1
7
8
8
5
1
5
1
- 0.8
1
+ δ
+ δ
TYP
1.8 - δ
MAX
15 - δ
0.30
5.25
720
720
240
280
120
1.8
1.8
0.4
80
60
27
75
75
13
15
60
60
15
7
5
8
1
9
8
8
1
5
UNITS
DS2408
µA
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
ns
V
V
V