SCDS192C April 2005 – September 2021 SN74CBTU4411
PRODUCTION DATA
The SN74CBTU4411 device is organized as an 11-bit 1-of-4 multiplexer or demultiplexer with a single switch-enable (EN) input. When EN is low, the switch is enabled and the H port is connected to one of the D ports. Ports D0 to D9 for the disabled channels are connected to VBIAS through a 400-Ω resistor. DQS_EN determines the output voltage for the disabled D10 ports. When DQS_EN is low, this voltage is VBIAS. When DQS_EN is high, the disabled D10 ports are connected to an internal voltage (VBIAS_DQS) source, which is approximately equal to 0.7 VDD.
When EN is high, all the channels are disabled. Ports D0 to D9 are connected to VBIAS. For the D10 port, the disabled output voltage is determined by the DQS_EN input. When DQS_EN is low, this voltage is VBIAS. When DQS_EN is high, this voltage is VDD.