MAX7456 is a single-channel monochrome on-screen display with integrated EEPROM
The MAX7456 single‑channel monochrome on‑screen display (OSD) generator eliminates the need for external video drivers, sync separators, video switches, and EEPROMs. It supports NTSC and PAL standards and provides up to 16 rows by 30 characters of on‑screen text, with 12 × 18‑pixel character size.
The device is supplied in a 28‑pin TSSOP package, operates from three independent 4.75 V‑5.25 V supplies, and includes a SPI‑compatible serial interface for in‑circuit reprogramming of 256 user‑defined characters or pictographs. Typical applications include security systems, cameras, in‑cabin entertainment, and consumer electronics.
| Supply Voltage (Analog/Digital/Driver) | 4.75 V to 5.25 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Character Size | 12 × 18 pixels |
| Display Capacity | 16 rows × 30 characters |
| User‑Defined Characters | 256 characters or pictographs |
| Clock Frequency | 27 MHz |
| Package Type | 28‑pin TSSOP |
The analog, digital and driver supplies must be between 4.75 V and 5.25 V.
Up to 256 user‑defined characters or pictographs can be stored in the integrated EEPROM.
The device uses a 27 MHz clock input.
The device is specified for operation from –40 °C to +85 °C.