Dual 4:1 analog mux with 230 MHz bandwidth
The Toshiba 74VHC4052AFT is a dual 4:1 analog multiplexer/demultiplexer — two independent SP4T switches in a single 16-TSSOP package. It routes analog or digital signals up to 230 MHz, with a maximum on-resistance of 37Ω and channel-to-channel matching within 5Ω.
On-resistance and crosstalk — what they mean for signal integrity
The 37Ω max on-resistance (Ron) sets the insertion loss in the signal path. For a 50Ω system, the mux adds about 0.6 dB of attenuation — acceptable for most video and RF chains, but worth budgeting if the signal is already near the noise floor. The 5Ω channel-to-channel matching (ΔRon) keeps gain errors consistent across channels, which matters when the mux feeds a differential ADC or a multi-channel data-acquisition front end. Crosstalk is specified at -45 dB at 1 MHz — a solid figure for a 2V to 5.5V CMOS mux. In practice, that means a 1 Vpp signal on one channel bleeds about 5.6 mV into an adjacent off-channel at 1 MHz. The 230 MHz -3 dB bandwidth confirms the switch can handle composite video (NTSC/PAL at ~5 MHz) or baseband digital signals up to 100+ MHz with minimal roll-off.
Supply rails and temperature range
The logic inputs are 5V-tolerant when VCC is at 3.3V, so a 3.3V MCU can drive the address and enable pins without level shifting.
Housed in a 16-TSSOP (4.40 mm body width), the 74VHC4052AFT uses the standard TSSOP-16 footprint — 0.65 mm pitch, 5.0 mm body length. The surface-mount package is suitable for reflow assembly; If the reel has been open beyond the floor-life window, a bake before reflow is the safe call.