SN74CB3Q3257DBQR

Product Summary

The SN74CB3Q3257DBQR is a high-bandwidth FET bus switch utilizing 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 SN74CB3Q3257DBQR 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 SN74CB3Q3257DBQR provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

Parametrics

SN74CB3Q3257DBQR absolute maximum ratings: (1)Supply voltage range, VCC: -0.5 V to 4.6 V; (2)Control input voltage range, VIN (see Notes 1 and 2): -0.5 V to 7 V; (3)Switch I/O voltage range, VI/O (see Notes 1, 2, and 3): -0.5 V to 7 V; (4)Control input clamp current, IIK (VIN＜0) -50mA; (5)I/O port clamp current, II/OK (VI/O＜0): -50mA; (6)ON-state switch current, IIO (see Note 4): ±64mA; (7)Continuous current through VCC or GND terminals:±100mA; (8)Package thermal impedance: 82℃/W; (9)Storage temperature range, Tstg: -65℃ to 150℃.

Features

SN74CB3Q3257DBQR features: (1)High-Bandwidth Data Path (Up to 500 MHz); (2)5-V Tolerant I/Os with Device Powered-Up or Powered-Down; (3)Low and Flat ON-State Resistance (ron) Characteristics Over Operating Range (ron = 4Ω Typical); (4)Rail-to-Rail Switching on Data I/O Ports; (5)0 to 5V Switching With 3.3V VCC; (6)0 to 3.3V Switching With 2.5V VCC; (7)Bidirectional Data Flow, With Near-Zero Propagation Delay; (8)Low Input/Output Capacitance Minimizes Loading and Signal Distortion (Cio(OFF) = 3.5 pF Typical); (9)Fast Switching Frequency (fOE = 20 MHz Max); (10)Data and Control Inputs Provide Undershoot Clamp Diodes; (11)Low Power Consumption (ICC= 0.7mA Typical); (12)VCC Operating Range From 2.3 V to 3.6 V; (13)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); (14)Control Inputs Can be Driven by TTL or 5-V/3.3-V CMOS Outputs; (15)Ioff Supports Partial-Power-Down Mode Operation; (16)Latch-Up Performance Exceeds 100mA Per JESD 78, Class II; (17)ESD Performance Tested Per JESD 22.

Diagrams