Bus Switch 1-Element CMOS 8-IN 20-Pin TSSOP Tube

The SN74CB3T3245 device is a high-speed TTL-compatible 8-bit 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.For all available packages, see the orderable addendum at the end of the data sheet. 

Standard "245-Type Pinout

Output Voltage Translation Tracks V_CC

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 V_CC
• 5-V/3.3-V Input Down to 2.5-V Output Level Shift With 2.5-V V_CC

5-V-Tolerant I/Os With Device Powered Up or Powered Down

Bidirectional Data Flow With Near-Zero Propagation Delay

Low ON-State Resistance (r_on) Characteristics (r_on = 5 ? Typical)

Low Input/Output Capacitance Minimizes Loading (C_io(OFF) = 5 pF Typical)

Data and Control Inputs Provide Undershoot Clamp Diodes

Low Power Consumption (I_CC = 40 µA Maximum)

V_CC 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

I_off 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)

Ideal for Low-Power Portable Equipment