DS2407 Datasheet, PDF (1/31 Pages) Dallas Semiconductor – Dual Addressable Switch Plus 1K.Bit Memory

DS2407
DS2407
Dual Addressable Switch Plus
1K–Bit Memory
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
TO–92
DALLAS
DS2407
TSOC PACKAGE
1
6
2
5
3
4
TOP VIEW
3.7 X 4.0 X 1.5 mm
1 23
SIDE VIEW
See Mech. Drawings
Section
1 23
BOTTOM VIEW
See Mech. Drawings
Section
PIN DESCRIPTION
TO–92
Pin 1
Ground
Pin 2
Data
Pin 3
PIO–A
Pin 4
––––
Pin 5
––––
Pin 6
––––
TSOC
Ground
Data
PIO–A
V_CC
NC
PIO–B
PIO–A
PIO–B
DATA
1–WIRE
PROTOCOL
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