1 Features

1• High-Bandwidth Data Path (Up to 500 MHz)(1)

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

Powered Down

• Low and Flat ON-State Resistance (ron)

Characteristics Over Operating Range

(ron= 5 Ω Typical)

• Rail-to-Rail Switching on Data I/O Ports

– 0 to 5-V Switching With 3.3-V VCC

– 0 to 3.3-V Switching With 2.5-V VCC

• Bidirectional Data Flow With Near-Zero

Propagation Delay

• Low Input and Output Capacitance Minimizes

Loading and Signal Distortion

(Cio(OFF) = 4 pF Typical)

• Fast Switching Frequency (f OE = 20 MHz

Maximum)

• Data and Control Inputs Provide Undershoot

Clamp Diodes data•

Low Power Consumption (ICC = 1 mA Typical)

• 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 and 3.3-V CMOS Outputs

• Ioff Supports Partial-Power-Down Mode Operation

• Latch-Up Performance Exceeds 100 mA

Per JESD 78, Class II

• ESD Performance Tested Per JESD 22

– 2000-V Human Body Model

(A114-B, Class II)

– 1000-V Charged-Device Model (C101)

• Supports Both Digital and Analog Applications

2 Applications

• IP Phones: Wired and Wireless

• Optical Modules

• Optical Networking: Video Over Fiber and EPON

• Private Branch Exchange (PBX)

• WiMAX and Wireless Infrastructure Equipment

3 Description

The SN74CB3Q16244 device is a high-bandwidth

FET bus switch using a charge pump to elevate the

gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat

ON-state resistance allows for minimal propagation

delay and supports rail-to-rail switching on the data

input/output (I/O) ports. The SN74CB3Q16244 device

also features low data I/O capacitance to minimize

capacitive loading and signal distortion on the data

bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q16244 device provides

an optimized interface solution ideally suited for

broadband communications, networking, and data•

intensive computing systems.