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DS1809-010

P1-P3P4-P6P7-P9
DS1809
4 of 9
PUSHBUTTON CONFIGURATION Figure 2
It is assumed that the STR input will be controlled by either external logic or CPU driven. No external
capacitors or diodes are needed for the command-initiated storage operation.
The STR input will take precedence over the pushbutton inputs UC and DC.
AUTOSTORE CONFIGURATION Figure 3
DS1809
5 of 9
PUSHBUTTON TIMING DIAGRAMS Figure 4
If during any pushbutton activity the STR input is activated, pushbutton operation will be suspended until
the storage of EEPROM has been completed. Once complete, pushbutton inputs, if still active, will
resume from the point of suspension. Command initiated storage operations will require a minimum of
4 ms to complete the storage operation. This 4 ms is measured from the rise of STR input (see Figure 5).
For applications not requiring or using the nonvolatile memory feature of the DS1809, it is recommended
that the STR input be connected to GND.
COMMAND INITIATED WIPER STORAGE - Figure 5
DS1809
6 of 9
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground -1.0V to +7.0V
Operating Temperature -40°C to +85°C; industrial
Storage Temperature -55°C to +125°C
Soldering Temperature See J-STD-020A Specification
* This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS (-40C to +85C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Supply Voltage V
CC
+4.5 5.5 V 1
Resistor Inputs R
L
,R
H
,R
W
GND-0.5 V
CC
+0.5 V 2
GND GND GND GND 1
DC ELECTRICAL CONDITIONS (-40C to +85C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Supply Current Active I
CC
500 1000 μA 5
Standby Current I
STBY
25 μA 6
Logic Input High V
IH
+2.0 V
CC
+0.5 V 6,11
Logic Input Low V
IL
-0.5 +0.8
+0.6
V 6,11
Input Leakage I
IL
-1 +1 μA 3
Wiper resistance R
WIPER
400 Ω
Wiper Current I
W
1 mA
Storage Pin Current (STR) I
SP
5 8 μA 12,18
Wiper Storage Time
t
WST
4
ms 19
P1-P3P4-P6P7-P9

DS1809-010

Mfr. #:
Buy DS1809-010
Manufacturer:
Maxim Integrated
Description:
Digital Potentiometer ICs Dallastat
Lifecycle:
New from this manufacturer.
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