NT91315XL

Features:

 Tone/Pulse switchable
 32-digit redial memory
 32-digit save memory (DL version)
 3 emergency memory banks (16 digits each)
 10 indirect memory banks (16 digits each)
 Flash, Pause, P®T can be saved as a digit in memory
 Chain dialing allowed
 None or (0) or (0, 9) or (0, 168) or all digits dialing inhibition (diode option) for PABX system or long distance dialing lock out
 Pause time 2.2/3.6 sec selectable (diode option)
 3 pulse dialing number systems N/N+1/10-N (diode option)
 Dialing rate 10pps, M/B ratio 2/3 & 1/2 selectable/dialing rate 10pps & 20pps selectable, M/B ratio 1/2 (diode option)
 Hands-Free control function with debouncing (BL, CL & DL version)
 Hold function with debouncing (CL & DL version)
 Key-tone output for dialing access (DL version)
 One-key redial (DL version)
 Flash time 600ms, 300ms, 100ms (DL version)
 Power-up reset circuit provided
 Key release debouncing
 32-step synthetic tone output for low DTMF output harmonic distortion
 16/18/20/22-pin packages


Pinout




Specifications

Supply Voltage (V_DD) . . . . . . . . . . . . . .-0.3V to +6.0V
Input Voltage (V_IN) . . . . . .. . . . V_SS - 0.3V to V_DD + 0.3V
Output Voltage (V_OUT) . . . . . . .V_SS - 0.3V to V_DD + 0.3V
Output Voltage (V_OUT)(DP , XMUTE ) . . . . . . . . .<1.2V
Tone Output Current (I_TONE) . . . . . . . . . . . . . . <50 mA
Power Dissipation (P_D) . . . . . . . . . . . . . . . . . <500 mW
Operating Temperature (T_OP) . . . . . . . .-20 to +70
Storage Temperature (Tstg) . . . . . . . . .-40 to +125


Description

The NT91315XL series are single-chip silicon gate CMOS integrated circuits with on-chip oscillators to be used with a 3.58 MHz crystal or ceramic resonator. They provide dialing pulse (DP) or dual tone multi-frequency (DTMF) dialing. A 24-key (5x5-1) matrix keyboard is used for either DP or DTMF mode. In NT91315XL on-chip RAM, up to 32 digits can be saved for both redial and save functions, and up to 16 digits can be saved for 3 direct emergency and 10 indirect dialing memory banks. In DTMF mode, a small minimum tone duration and minimum inter-tone pause allows for rapid dialing. Maximum tone duration depends on the key depression time in manual dialing.