The MAX4545/MAX4546/MAX4547 are low-voltage T-switches designed for switching RF and video signals from DC to 300MHz in 50Ω and 75Ω systems. They have excellent high-frequency off isolation and crosstalk performance, and can handle Rail-to-Rail® analog signals in either direction. The on-resistance is well matched and flat over the specified signal range, using ±5V supplies. They can operate with dual power supplies ranging from ±2.7V to ±6V or a single supply between +2.7V and +12V. All digital inputs have 0.8V/2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using ±5V or a single +5V supply.
The MAX4545, MAX4546 and MAX4547 are low‑voltage T‑switches for RF and video signals from DC to 300 MHz. They provide four, two dual, or two SPDT switches respectively, with rail‑to‑rail bidirectional signal handling and low insertion loss.
The document includes electrical characteristics for dual‑supply (+2.7 V to +6 V) and single‑supply (+2.7 V to +12 V) operation, pin descriptions, typical performance graphs, ordering information and package dimensions.
| Insertion Loss | -1 dB at 100 MHz |
|---|---|
| Off Isolation | -80 dB at 10 MHz |
| Crosstalk | -80 dB at 10 MHz |
| Signal Bandwidth | DC to 300 MHz (-3 dB) |
| Supply Voltage (dual) | +2.7 V to +6 V |
| Supply Voltage (single) | +2.7 V to +12 V |
| ESD Protection | >2 kV per Method 3015.7 |
The switches operate with dual supplies from +2.7 V to +6 V, or a single supply from +2.7 V to +12 V.
The switches have greater than 2 kV ESD protection per IEC Method 3015.7.