Analog Devices Inc./Maxim Integrated DS24L65P+T

The DS24L65 helps an I2C host authenticate compatible 1-Wire SHA-256 slave devices. It integrates the cryptographic engine, two user EEPROM pages, a configurable 1-Wire master, and protocol conversion so the host does not have to generate time-critical 1-Wire waveforms. The P+T ordering code specifies the lead-free six-pin TSOC form supplied on tape and reel.

• SHA-256 coprocessor with two 32-byte user EEPROM pages and programmable protection options.
• 1-Wire master with standard and overdrive communication speeds.
• I2C host interface supporting standard and fast modes.
• Software-controlled 1-Wire port power-down and low-power sleep input.
• Strong pullup path for 1-Wire power delivery.

The manufacturer's order table identifies DS24L65P+T as a six-pin TSOC, package code D6+1. The catalog describes this as 6-SMD, J-Lead; use the manufacturer's TSOC outline and land-pattern drawings to verify the exact footprint. The T suffix denotes tape-and-reel supply, not a different electrical function.

Layout checks

• Confirm pin 1 and package orientation against the TSOC top view.
• Use the manufacturer's package drawing for land dimensions.
• Keep I2C pullups and supply decoupling close to the device.

The package illustration is indicative; mechanical design must follow the manufacturer's drawing.

Use the full manufacturer documentation for security provisioning and complete command behavior; the public datasheet is abridged.

DS24L65P+ is the corresponding non-tape-and-reel order form in the same six-pin TSOC family. For other devices, compare supply voltage, I2C command map, 1-Wire timing, authentication protocol, memory protection, package code, and pinout before substitution. No unverified internal product link is provided.

Analog Devices hosts the Maxim Integrated DS24L65 Rev. 1 abridged datasheet. Its ordering table explicitly lists DS24L65P+T as a −40 to +85 °C six-pin TSOC device and defines T as tape and reel.

Confirm the exact DS24L65P+T marking, six-pin TSOC package, and lot traceability. Protect secret provisioning and validate host-to-slave authentication with the actual system hardware.

Confirm the TSOC footprint and pin orientation, I2C and 1-Wire pullup networks, supply conditions, sleep control, security provisioning, and command behavior against the manufacturer documentation. The public datasheet is abridged and does not disclose every implementation detail.