DG534ADJ

Analog Switches - Special Purpose Overview

The DG534ADJ is a digitally selectable 4-channel or dual 2-channel wideband video multiplexer manufactured by Vishay Siliconix. It operates within a supply voltage range of 10 V to 21 V and supports an operating temperature range of -40 °C to +85 °C. The device features a maximum on-resistance of 90 Ω, a typical bandwidth of 500 MHz, and a transition time of up to 300 ns. It utilizes a 20-pin Plastic DIP package with a power dissipation rating of 625 mW.

Analog Switches - Special Purpose Feature Summary

• On-chip TTL-compatible address decoding logic and latches with data readback simplify microprocessor interface.
• Low on-resistance and low capacitance DMOS FETs in a 'T' configuration achieve extremely high off-isolation levels.
• Optional negative supply pin allows handling of bipolar signals without DC biasing.
• Epitaxial layer construction prevents latch-up for improved reliability.

Analog Switches - Special Purpose Applications

• Wideband signal routing and multiplexing
• Video switchers and crosspoint arrays
• ATE systems
• Infrared imaging
• Ultrasound imaging

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature grade. Confirm current availability status as distribution channels may list obsolete inventory. Ensure the source document matches the manufacturer's datasheet number 70069 for accurate electrical specifications.

Analog Switches - Special Purpose Selection Notes

Select this component for applications requiring single-ended or differential operation with high-speed switching. Consider the 20-pin PDIP package for through-hole mounting requirements. Verify that the system logic levels align with the TTL-compatible inputs when VL is set to 5 V.

Analog Switches - Special Purpose Part Context

The DG534A is part of the DG534A/538A family of wideband video multiplexers. It serves as an improved pin-compatible replacement for earlier non-A versions, offering higher current readback drivers and enhanced latchup protection compared to legacy variants.

Analog Switches - Special Purpose Replacement Considerations

DG534ADN (PLCC-20 package variant).

Analog Switches - Special Purpose FAQ

How does the DG534ADJ handle bipolar signals?

It includes an optional negative supply pin (V–) that allows the handling of bipolar signals without the need for DC biasing circuits.

What mechanism reduces crosstalk in this device?

Crosstalk is reduced to –97 dB at 5 MHz by including a ground line between adjacent signal paths and using DMOS transistors configured in 'T' arrangements.

Can the address latches be read back?

Yes, the device includes on-chip latches with a data readback facility controlled by the I/O pin, allowing the last written address to be output to the system.