Описание
The DG538A is an 8-channel or dual 4-channel multiplexer. On-chip TTL-compatible address decoding logic and latches with data readback are included to simplify the interface to a microprocessor data bus. The low on-resistance and low capacitance of the these devices make them ideal for wideband data multiplexing and video and audio signal routing in channel selectors and crosspoint arrays. An optional negative supply pin allows the handling of bipolar signals without dc biasing.The DG538A are built on a D/CMOS process that combines n-channel DMOS switching FETs with low-power CMOS control logic, drivers and latches. The low-capacitance DMOS FETs are connected in a “T” configuration to achieve extremely high levels of off isolation. Crosstalk is reduced to -97 dB at 5 MHz by including a ground line between adjacent signal paths. An epitaxial layer prevents latch-up.
- Wide Bandwidth: 500 MHz
- Very Low Crosstalk: –97 dB @ 5 MHz
- On-Board TTL-Compatible Latches with Readback
- Optional Negative Supply
- Low RDS(on): 45
- Single-Ended or Differential Operation
- Latch-up Proof
