Datasheet

DS1868B
CAPACITANCE (T
A
= +25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
IN
5 pF
Output Capacitance
C
OUT
7
pF
AC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; V
CC
= 5.0V ±10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CLK Frequency f
CLK
DC 3.5 MHz 6
Width of CLK Pulse t
CH
50 ns 6
Data Setup Time t
DC
30 ns 6
Data Hold Time t
CDH
10 ns 6
Propagation Delay Time Low to High Level
Clock to Output
t
PLH
250
ns
6
Propagation Delay Time High to Low Level t
PHL
250 ns 6
RST
High to Clock Input High
t
CC
50 ns 6
RST
Low from Clock Input High
t
HLT
50
ns
6
RST
Inactive
t
RLT
125 ns 6
NOTES:
1. All voltages are referenced to ground.
2. Resistor inputs cannot exceed V
B
- 0.5V in the negative direction.
3. INL is used to determine wiper voltage versus expected voltage as determined by wiper position.
4. DNL is used to determine the change in voltage between successive tap positions.
5. C
OUT
is active regardless of the state of
RST
.
6. See Figure 9(a), (b), and (c).
7. Supply current is dependent on clock rate (see Figure 11).
8. Standby currents apply when
RST
, DQ are in the low-state.
9. When biasing the substrate minimum V
B
= -3.0V ±10% and maximum V
CC
= 3.0V ±10%.
10. Valid at +25°C only.
11. Digital inputs.
Maxim Integrated ............................................................................................................................................................................................. 9