SN74CB3Q32245

Specifications

Supply voltage range, V_CC  . . . . . . .  .  . . . .. . . . . . . . . . . . .  −0.5 V to 4.6 VC
ontrol input voltage range, V_IN (see Notes 1 and 2)  . . . . . . .. . −0.5 V to 7 V
Switch I/O voltage range, V_I/O (see Notes 1, 2, and 3) . . . . . .. −0.5 V to 7 V
Control input clamp current, I_IK (V_IN < 0) . . . . . . . .  . . .  . . . . . . . . . . −50 mA  
I/O port clamp current, I_I/OK (V_I/O < 0)  . . . . .  . . . . .  . . . .. . . . . . .. .−50 mA 
ON-state switch current, I_I/O (see Note 4)  . . . . . . . . .  .  . . . .. . . .. .±64 mA
Continuous current through V_CC or GND terminals   . . . . . . . .  . .  . ±100 mA
Package thermal impedance, _JA (see Note 5): DBQ package . . . . . 40°C/W 
Storage temperature range, T_stg . . . . . . .  . . . . . . . . . .  .. −65°C to 150°C   


Description

The SN74CB3Q32245 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 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 SN74CB3Q32245 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

The SN74CB3Q32245 is organized as four 8-bit bus switches with separate output-enable (1OE, 2OE,3OE,4OE) inputs. It can be used as four 8-bit bus switches, two 16-bit bus switches, or as one 32-bit bus switch. WhenOE is low, the associated 8-bit bus switch is ON and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 8-bit bus switch is OFF, and a high-impedance state exists between the A and B ports.