Compatible Ds1990a-F5 Ibutton TM1990A-F5 Electronic Key

Specifications

The TM1990A Serial Number iButton is a rugged
data carrier that serves as an electronic registration number for automatic identification.
requires only a single data lead and a ground return.
Every TM1990A is factory lasered with a guaranteed unique 64-bit registration number

 that allows for absolute traceability.

The durable stainless-steel iButton package is highly resistant to environmental
hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning

with mating receptacles, allowing the TM1990A to be used easily by human operators.

Accessories permit the TM1990A iButton to be mounted on almost anyobject,

including containers, pallets, and bags.

COMMON iButton FEATURES

Unique Factory-Lasered 64-Bit Registration
Number Assures Error-Free Device Selection
and Absolute Traceability Because No Two Parts are Alike
Digital Identification by Momentary Contact
Data can be Accessed While Affixed to Object
Economically Communicates to Bus Master with a Single Digital Signal at 16.3kbps
Button Shape is Self-Aligning with Cup-Shaped Probes
Durable Stainless-Steel Case Engraved with Registration Number Withstands Harsh Environments
Easily Affixed with Self-Stick Adhesive Backing,
Latched by its Flange, or Locked with a Ring

Pressed Onto its Rim

Can Be Read in Less Than 5ms
Operating Range: 2.8V to 6.0V, -40°C to +85°C

APPLICATIONS

1.Access Control
2.Work-In-Progress Tracking
3.Inventory Control.
4.Guard tour system

ABSOLUTE MAXIMUM RATINGS

IO Voltage to GND
IO Sink Current
Junction Temperature
Storage Temperature Range
-0.5V, +6.0V
20mA
+125°C
-55°C to +125°C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is
not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device.