The MSM7578 and MSM7579 are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 Hz.
The OKI MSM7578H, MSM7578V, and MSM7579 are single‑channel CODEC CMOS ICs designed for voice signals (300‑3400 Hz). They operate from a single +5 V supply, feature low power consumption, and include built‑in PLL, adjustable gain, and direct drive capability for handset receivers.
The datasheet provides detailed pin configurations, functional descriptions, absolute maximum ratings, recommended operating conditions, and package dimensions for DIP, SOP, and SSOP variants.
| Supply voltage | +5.0 V |
|---|---|
| Power consumption (operating mode) | 25 mW typ., 47 mW max. |
| Power consumption (power‑down mode) | 0.05 mW typ., 0.3 mW max. |
| Operating temperature range | -30 °C to +85 °C |
| Supply voltage range (recommended) | 4.75 V – 5.25 V |
| Sync pulse frequency | 6.0 kHz – 9.0 kHz |
| Digital output load | 0.5 kΩ (pull‑up resistor) |
| Package weight (DIP) | 0.58 g typ. |
It operates from a single +5 V supply.
The devices are rated from –30 °C to +85 °C.