TTL

TTL may refer to:

Photography

• Through-the-lens metering, a camera feature that permits light metering through the taking lens itself, rather than via a separate window
• Zenit TTL, an SLR film camera, named for its introduction of TTL metering to the Zenit camera line

Technology

• Time to live, a mechanism that limits the lifespan of data in a computer or network
• Transistor–transistor logic, a family of integrated-circuit digital logic
  • Differential TTL, a serial signaling standard based on a transistor–transistor logic interface
• Turtle (syntax), a computer data format used in semantic web technologies

Retail Sales

• Taiwan Tobacco and Liquor, a state-owned manufacturer of cigarettes and alcohol in Taiwan

Other

• TTL (Time to Love) is a hit single by South Korean girl group T-ara and boy band Supernova