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PDF IL91531 Data sheet ( Hoja de datos )
| Número de pieza | IL91531 | |
| Descripción | Parallel Input Tone/Pulse Dialer | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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TECHNICAL DATA
PARALLEL INPUT TONE/PULSE DIALER
High-Performance Silicon-Gate CMOS
IL91531
The IL91531 provides a 4-bit data input and a handshaking signal to
serve as microcomputer interfaces. Under microcomputer control the
IL91531 generates both a DTMF signal and a pulse output for telephone
dialing. All necessary dual-tone frequencies and dial pulse outputs are
derived from the widely used TV crystal standard, providing high accuracy
and stability. The required sinusoidal waveform for individual tones is
digitally synthesized on the chip, resulting in a waveform with very low
total harmonic distortion.
• 4-bit parallel data input from microcomputer
• TTL compatible inputs and outputs
• Uses TV crystal standard (3.58 MHz) to derive all frequencies,
providing high accuracy and stability
• Operating voltage: 2.5 to 5.5 Volts
• Selectable M/B ratio
• 10 PPS dial rate
• DTMF signaling of digits 0 9, *, #, A, B, C, and D
• Pulse signaling of 0 ∼ 9, *, #, and A
• High group tone pre-emphasis: 2 dB
• Low total harmonic distortion in DTMF signaling
ORDERING INFORMATION
IL91531N
TA = -10° to 70° C
www.DataSheet4UPIN .AScSIoGNMmENT
LOGIC DIAGRAM
PIN 10 = GND
PIN 16 = VCC
1
1 page  
IL91531
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND, TA = -10 to +70°C)
Symbol
Parameter
Test Conditions
Guaranteed Limits
Min Max
Unit
VIH High-Level Input
Voltage
0.8 1
V
VIL Low-Level Input Voltage
IIN Maximum Input Leakage
Current
0 0.2 V
±1.0 µA
IOL1 Minimum Output Sink VCC =2.5 V,
Current, DP
VOL = 0.4V
IOL2 Minimum Output Sink VCC =5.0 V,
Current, DP
VOL = 0.4V
ICC Maximum Supply
Current Standby
CE=VCC
All outputs unloaded
1 mA
3 mA
8 µA
ICCP Maximum Supply
Current Pulse
ICCT Maximum Supply
Current Tone
IOHACK Minimum Output
Current, ACK Source
CE=GND
All outputs unloaded
VCC = 3.5 V
FOSC = 3.58 MHz
CE=GND
All outputs unloaded
VCC = 3.5 V
FOSC = 3.58 MHz
VCC = 5.0 V, VOH = 2.4 V
1 mA
1 mA
1.6 mA
IOLACK Minimum Output
Current, ACK Sink
VCC = 5.0 V, VOL = 0.4 V
4.0
mA
VOR Single Row Tone
Output Amplitude
VOC Single Column Tone
Output Amplitude
VCC = 2.5 V, RL = 2.2 kΩ
VCC = 5.5 V, RL = 2.2 kΩ
VCC = 2.5 V, RL = 2.2 kΩ
VCC = 5.5 V, RL = 2.2 kΩ
500 mVp-p
1500
500 mVp-p
1600
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet IL91531.PDF ] | |
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