HD404618 Datasheet, PDF (82/91 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404618 Series
DTMF Characteristics (HD404612, HD404614, HD404616, HD404618: V_CC = 2.7 V to 6.0 V;
HD4074618: V_CC = 3.0 V to 5.5 V, GND = 0 V, T_a = –20 to +75°C, unless otherwise specified)
Item
Symbol Pin(s) Min Typ Max Test Conditions
Tone output
voltage (1)
Tone output
voltage (2)
Tone output
distortion
V_OR
V_OC
%DIS
TONER 500 660 —
TONEC 520 690 —
—3
7
Tone output dB_CR
ratio
— 2.5 —
Notes: 1. See figure 48.
2. See figure 49.
VT_ref – GND = 2.0 V,
R_L = 100 kΩ
VT_ref – GND = 2.0 V,
R_L = 100 kΩ
Short circuit between
TONER and TONEC,
R_L = 100 kΩ
Short circuit between
TONER and TONEC,
R_L = 100 kΩ
Unit
mV_rms
mV_rms
%
dB
Notes
1
1
2
2
80