描述 Description

The SN74CB3T3306 device is a high-speed TTL-compatible FET bus switch with low ON-state resistance (ron), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O ports by providing voltage translation that tracks VCC. The SN74CB3T3306 device supports systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels.

特性 Features

? Output Voltage Translation Tracks VCC
? Supports Mixed-Mode Signal Operation on All Data I/O Ports
? 5-V Input Down to 3.3-V Output Level Shift With 3.3-V VCC
? 5-V/3.3-V Input Down to 2.5-V Output Level Shift With 2.5-V VCC

? 5-V Tolerant I/Os With Device Powered Up or Powered Down
? Bidirectional Data Flow With Near-Zero Propagation Delay
? Low ON-State Resistance (ron) Characteristics (ron = 5 Ω Typical)
? Low Input/Output Capacitance Minimizes Loading (Cio(OFF) = 4.5 pF Typical)
? Data and Control Inputs Provide Undershoot Clamp Diodes
? Low Power Consumption (ICC = 20 μA Maximum)
? VCC Operating Range From 2.3 V to 3.6 V
? Data I/Os Support 0- to 5-V Signaling Levels (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)
? Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs
? Ioff Supports Partial-Power-Down Mode Operation
? Latch-Up Performance Exceeds 250 mA Per JESD 17
? ESD Performance Tested Per JESD 22
? 2000-V Human Body Model (A114-B, Class II)
? 1000-V Charged-Device Model (C101)

? Supports Digital Applications:
? Level Translation
? USB Interface
? Bus Isolation

? Ideal for Low-Power Portable Equipment