DG408/DG409 is a CMOS analog multiplexer with guaranteed 8Ω channel matching and 9Ω flatness. These low-on-resistance multiplexers (100Ω max) conduct equally well in either direction and feature guaranteed low charge injection of 15pC max. In addition, these new multiplexers offer low input off-leakage current over temperature - less than 5nA at +85°C. DG408 is a 1-of-8 multiplexer/demultiplexer and DG409 is a dual 4-channel multiplexer/demultiplexer. Both multiplexers operate with a single +5V to +30V supply and with ±5V to ±20V dual supplies. ESD protection is guaranteed to be greater than 2000V per Method 3015.7 of MIL-STD-883. These improved multiplexers are pin-compatible plug-in upgrades for the industry standard DG408 and DG409.
The DG408 is a 1‑of‑8 analog multiplexer/demultiplexer and the DG409 is a dual 4‑channel version. Both devices operate from a +5 V to +30 V single supply or ±5 V to ±20 V dual supplies and feature rail‑to‑rail signal handling.
Key features include guaranteed channel matching (8 Ω max), on‑resistance flatness (9 Ω max), low charge injection (15 pC max), input leakage below 5 nA at +85 °C, and ESD protection exceeding 2000 V per MIL‑STD‑883 Method 3015.7. The datasheet provides absolute maximum ratings, electrical characteristics, pin configurations, and application information.
| Channel Matching | 8 Ω max |
|---|---|
| On‑Resistance Flatness | 9 Ω max |
| Charge Injection | 15 pC max |
| Input Leakage | 5 nA max at +85 °C |
| ESD Protection | >2000 V |
| Supply Voltage (single) | +5 V to +30 V |
| Supply Voltage (dual) | ±5 V to ±20 V |
The devices guarantee a maximum on‑resistance of 8 Ω per channel.
They provide ESD protection greater than 2000 V according to MIL‑STD‑883 Method 3015.7.
Input leakage is limited to 5 nA at +85 °C.
They operate from +5 V to +30 V with a single supply or ±5 V to ±20 V with dual supplies.