Specifications

100 Control and Automation Solutions Guide
RFID Keycard Meets International Standards
for Data Authentication and Transmission to
Provide Secure Contactless Entry Systems
MAX66140
The MAX66140 keycard secure memory complies with ISO 15693 RF interface and
ISO 10118-3 SHA-1 authentication to provide secure contactless entry systems for
buildings and protected areas of all kinds. It also provides asset tracking capability.
Benefits
• Provides high level of security at low
cost
◦ SHA-1 authentication with 64-bit
secret prevents cloning
◦ Unique 64-bit identification—no
two keys are alike
◦ 1024-bit user EEPROM for any
integrator-defined data storage
needs
• Provides durable and highly reliable
operation
◦ Fully compliant with ISO 15693 and
ISO 18000-3 Mode 1 standard
◦ 200,000 minimum write/erase cycles
◦ 40yr minimum data-retention time
◦ -25°C to +50°C operating
temperature range
MAX66140K-000AA+MAX66140K-000AA+
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SIDE VIEW
54mm
28mm
7.7mm
1.6mm
85.60mm
53.98mm
0.76mm
14.29mm
3.49mm
MAX66140E-000AA+
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SIDE VIEW
KEY FOB
ISO CARD
The MAX66140 comes as a key fob or as an ISO card.