DESCRIPTION
The 78A207 is a single-chip, Multi-Frequency (MF) receiver that can detect all 15 tone-pairs, including ST and KP framing tones. This receiver is intended for use in equal access applications and thus meets both Bell and CCITT R1 central office register signaling specifications.

FEATURES
• Meets Bell and CCITT R1 specifications
• 20-pin plastic DIP
• Single low-tolerance 5V supply
• Detects all 15 tone-pairs including ST and KP
• Long KP capability
• Built-in amplitude discrimination
• Excellent noise tolerance
• Outputs in either “n of 6” or hexadecimal code
• Three-state outputs, CMOS-compatible and TTL-compatible