W91590 SERIES
Publication Release Date: July 1995
- 13 - Revision A3
DC CHARACTERISTICS
(VDD−VSS = 2.5V, FOSC. = 3.58 MHz, Ta = 25° C, all outputs unloaded)
PARAMETER SYM. CONDITIONS MIN. TYP. MAX. UNIT
Operating Voltage VDD 2.0 - 5.5 V
Operating Current IOP Tone - 0.3 0.5 mA
Pulse - 0.15 0.3
Standby Current ISB
= 0,
No load & No key entry
- - 15
µA
Memory Retention Current IMR
= 1, VDD = 1.0V
- - 0.2
µA
DTMF Output Voltage VTO Row group, RL = 5K 130 150 170 VrmS
Pre-emphasis -
Col/Row, VDD = 2.0 to 5.5V
1 2 3 dB
DTMF Distortion THD
RL = 5 KΩ, VDD = 2.0 to
5.5V
- -30 -23 dB
DTMF Output DC Level VTDC
RL = 5 KΩ, VDD = 2.0 to
5.5V
1.0 - 3.0 V
DTMF Output Sink Current ITL VTO = 0.5V 0.2 - - mA
Output Sink Current
IPL VPO = 0.5V 0.5 - - mA
T/P
Output Sink
Current
IML VMO = 0.5V 0.5 - - mA
HPM MUTE Output Sink
Current
IHPML VTO = 0.5V 0.5 - - mA
HPM MUTE Output drive
Current
IHPMH VTH = 2.0V 0.5 - - mA
I/P Pull High Resistor
RKH - 300 500
KΩ
Key Tone Output Current IKTH VKTH = 2.0V 0.5 - - mA
IKTL VKTH = 0.5V 0.5 - -
HFO Drive/Sink Current IHFH VHFH = 2.0V 0.5 - - mA
IHFL VHFL = 0.5V 0.5 - -
Keypad Input Drive Current IKD VI = 0V 30 - -
µA
Keypad Input Sink Current IKS VI = 2.5V 200 400 -
µA
Keypad Resistance - - 5.0
KΩ
