The MAX4565/MAX4566/MAX4567 are low-voltage T-switches designed for switching RF and video signals from DC to 350MHz in 50Ω and 75Ω systems. They offer high signal bandwidth, low crosstalk, and excellent high-frequency isolation.
The MAX4565, MAX4566, and MAX4567 are low‑voltage T‑switches designed for switching RF and video signals from DC to 350 MHz. They provide four SPST switches (MAX4565), two dual SPST switches (MAX4566), or two SPDT switches (MAX4567) in a compact package, with rail‑to‑rail bidirectional signal handling.
Key features include high off‑isolation (‑83 dB at 10 MHz), low crosstalk (‑87 dB at 10 MHz), a 2.5 Ω on‑resistance match, and operation from +2.7 V to +12 V single supply or dual +2.7 V to +6 V supplies. The datasheet provides absolute maximum ratings, detailed electrical characteristics for dual and single‑supply operation, pin descriptions, and ordering information.
| Off Isolation | -83 dB at 10 MHz |
|---|---|
| Crosstalk | -87 dB at 10 MHz |
| Signal Bandwidth | DC to 350 MHz (‑3 dB) |
| On‑Resistance (matched) | 2.5 Ω max |
| Power Consumption | <1 mW |
| Supply Voltage Range | +2.7 V to +12 V (single) or +2.7 V to +6 V (dual) |
| ESD Protection | >2 kV per Method 3015.7 |
They operate from +2.7 V to +12 V with a single supply, or from +2.7 V to +6 V with dual supplies.
The turn‑on time is typically 200 ns with dual supplies and 250 ns with a single +5 V supply.
Yes, the pins are compatible with industry‑standard DG540, DG542, and DG643 devices.