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M-985-01T 数据表(PDF) 3 Page - Clare, Inc. |
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M-985-01T 数据表(HTML) 3 Page - Clare, Inc. |
3 / 8 page Specifications (Continued) Parameter Conditions Min Max Units Notes Signal Rejection, Frequency Range - - - - 2 950, 1400, 1800 Level: V DD = 5.0V XRANGE = open - -40 (7.8 mV) dBm - Hz XRANGE = V SS - -50 (2.5 mV) dBm - Level: V DD = 3.0V XRANGE= open - -43 (5.5 mV) dBm - XRANGE= V SS - -53 (1.7 mV) dBm - Duration - 50 ms - - Outputs OUT n, V OL I SINK = -1mA - 0.5 V - STROBE pins V OH I SOURCE = 1mA V DD -0.5 - V - OUT n pins I OZ V O=VDD, VSS -1 µA- Inputs EN, OE, V IL - - 0.5 V - XRANGE, MODE, V IH V DD = 5V V DD - 2.0 - V - PD pins V DD = 2.7V V DD - 0.5 - V - Pull-up and MODE = V SS V DD = 5V 12.5 50 µA- Pull-down currents V DD = 2.7V 4 20 µA- /XRANGE = V SS -2 6 µA- MODE2 = V DD V DD = 5V 12.5 100 µA- V DD = 2.7V 12.5 25 µA- PD = V DD -4 10 µA- PD pin Pull-down current PD = V DD 12.5 50 µA- SIGIN pin Voltage range - -6.5 V DD V- Input impedance f=500 Hz 80 - k Ω - Input spectrum - - 28 kHz - Clock External clock V IL XOUT open - 0.2 V - connected to XIN V IH XOUT open V DD-0.2 - V - pin Duty cycle XOUT open 40 60 % - XIN, XOUT with Capacitance - - 10 pF - crystal osc. active Internal resistance - 20 - M Ω - Power up (t PU) PD hi to lo - 30 ms - X358 pin V OL C L = 20 pF, - 0.2 V - I SINK = -1mA V OH C L = 20 pF, V DD - 0.2 - V - I SOURCE = 1mA Duty cycle C L = 20 pF 40 60 % - Tri-state t EN (High Z to Low Z) C L = 50 pF, - 250 ns - Operation t DE (Low Z to High Z) R L = 100 kΩ - 250 ns Unless otherwise noted, V DD - VSS = 5V, Ta = 25°C, PD at logical low state, and XRANGE at a logical high state. Power levels are in dBm referenced to 600 ohm. DC voltages are referenced to VSS. Notes: 1. Per tone. 2. See Table 4 for detection/rejection frequencies. M-985-01 www.clare.com 3 Rev. 1 Call Progress Tone Detection Call progress tones are audible tones sent from switch- ing systems to calling parties to show the status of calls. Calling parties can identify the success of a call placed by what is heard after dialing. The type of tone used and its timing vary from system to system, and though intended for human ears these signals can provide valuable information for automated calling systems. The M-985-01 contains five signal detectors sensitive to the frequencies often used for these progress tones. Electronic equipment monitoring the OUTn outputs of the M-985-01 can determine the nature of signals pres- ent by measuring their duty cycle. See Mechanical Dimensions for a diagram of a circuit that could be used to permit a microcomputer to directly monitor tones on the telephone line. Much of the character of the progress tones is in their duty cycle or cadence (some- times referred to as interruption rate). This information, coupled with level and frequency indication from the M- 985-01, can be used to decide what progress tones have been encountered. |
类似零件编号 - M-985-01T |
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类似说明 - M-985-01T |
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