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DS2407
Dual Addressable Switch Plus
1K–Bit Memory
DS2407
012099 1/31
FEATURES
Open drain PIO pins are controlled and their logic
level can be determined over 1–Wire
TM
bus for
closed–loop control
Dual Channel operation (TSOC package)
PIO pin channel A sink capability of 50 mA at 0.4V with
soft turn–on; channel B 8 mA at 0.4V
Maximum operating voltage of 13V at PIO–A, 6.5V at
PIO–B
1024 bits user–programmable OTP EPROM
7 bytes of user–programmable status memory to con-
trol the device
Multiple DS2407s can be identified on a common
1–Wire bus and be turned on or off independently of
other devices on the bus
Unique, factory–lasered and tested 64–bit registra-
tion number (8–bit family code + 48–bit serial number
+ 8–bit CRC tester) assures error–free selection and
absolute identity because no two parts are alike
On–chip CRC16 generator allows detection of data
transfer errors
Built–in multidrop controller ensures compatibility
with other MicroLAN
TM
products
Reduces control, address, data, programming and
power to a single data pin
Directly connects to a single port pin of a microproces-
sor and communicates at up to 16.3k bits/s
Low cost TO–92 or 6–pin TSOC surface mount
package
1–Wire communication operates over a wide voltage
range of 2.8V to 6.0V from –40
°
C to +85
°
C
Supports Conditional Search with user–program-
mable condition
V
CC
bondout for optional external supply to the device
(TSOC package only)
Hidden Mode; the device will respond only to a Match
ROM command or a Conditional Search when in this
mode.
PIN ASSIGNMENT
3
2
1
DALLAS
DS2407
TO–92
BOTTOM VIEW
See Mech. Drawings
Section
1
2
3
1
2
3
6
5
4
TSOC PACKAGE
TOP VIEW
3.7 X 4.0 X 1.5 mm
SIDE VIEW
See Mech. Drawings
Section
PIN DESCRIPTION
TO–92
Ground
Data
PIO–A
––––
––––
––––
TSOC
Ground
Data
PIO–A
V
CC
NC
PIO–B
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
P1–WIRE
DATA
PIO–A
PIO–B