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MC145422DW 데이터시트(PDF) 4 Page - Motorola, Inc |
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MC145422DW 데이터시트(HTML) 4 Page - Motorola, Inc |
4 / 20 page MC145422 •MC145426 MOTOROLA 4 ABSOLUTE MAXIMUM RATINGS (Voltage Referenced to VSS) Rating Symbol Value Unit DC Supply Voltage VDD – VSS – 0.5 to + 9.0 V Voltage, Any Pin to VSS V – 0.5 to VDD + 0.5 V DC Current, Any Pin (Excluding VDD, VSS) I ± 10 mA Operating Temperature TA – 40 to + 85 °C Storage Temperature Tstg – 85 to + 150 °C RECOMMENDED OPERATING CONDITIONS (TA = 0 to 70°C) Parameter Pins Min Max Unit DC Supply Voltage VDD 4.5 5.5 V Power Dissipation (PD = VDD, VDD = 5 V) VDD — 80 mW Power Dissipation (PD = VSS, TE = VSS) VDD — 75 mW MC145422 Frame Rate MSI 7.9 8.1 kHz MC145422 — MC145426 Frame Rate Slip (See Note 1) — — 0.25 % CCI Clock Frequency (MSI = 8 kHz) CCI — 2.048 MHz Data Clock Rate MC145422 TDC, RDC 64 2560 kHz Modulation Baud Rate (See Note 2) LO1, LO2 — 256 kHz NOTES: 1. The MC145426 crystal frequency divided by 512 must equal the MC145422 MSI Frequency ± 0.25% for optimum operation. 2. Assumes crystal frequency of 4.096 MHz for the MC145426 and 2.048 MHz CCI for the MC145422. DIGITAL CHARACTERISTICS (VDD = 5 V, TA = 0 to 70°C) Parameter Min Max Unit Input High Level 3.5 — V Input Low Level — 1.5 V Input Current Except LI LI – 1.0 – 100 1.0 100 µA Input Capacitance — 7.5 pF Output High Current (Except Tx on MC145422 VOH = 2.5 V and Tx and PD on MC145426) VOH = 4.6 V – 1.7 – 0.36 — — mA Output Low Current (Except Tx on MC145422 VOL = 0.4 V and Tx and PD on MC145426) VOL = 0.8 V 0.36 0.8 — — mA PD Output High Current (MC145426) (See Note 1) VOH = 2.5 V VOH = 4.6 V – 90 – 10 — — µA PD Output Low Current (MC145426) (See Note 1) VOL = 0.4 V VOL = 0.8 V 60 100 — — µA Tx Output High Current VOH = 2.5 V VOH = 4.6 V – 3.4 – 0.7 — — mA Tx Output Low Current VOL = 0.4 V VOL = 0.8 V 1.7 3.5 — — mA Tx Input Impedance (TE1 = VSS, MC145422) 100 — k Ω Crystal Frequency (MC145426, Note 2) 4.0 4.4 MHz PCM Tone (TE = VDD, MC145426) – 22 – 18 dBm0 Three–State Current (SO1, SO2, VD, Tx on MC145422, Tx on MC145426) — ± 1 µA Vref Voltage (See Note 3) 2 3 V X2 — Oscillator Output High Drive Current (MC145426) (See Note 4) VOH = 4.6 V – 450 — µA X2 — Oscillator Output Low Drive Current (MC145426) (See Note 4) VOL = 0.4 V 450 — µA NOTES: 1. To overdrive PD from a low level to 3.5 V or a high level to 1.5 V requires a minimum of ± 800 µA drive capability. 2. The MC145426 crystal frequency divided by 512 must equal the MC145422 MSI frequency ± 0.25% for optimum performance. 3. Vref typically (9/20 VDD – VSS). 4. Output drive when X1 is being driven from an external clock. This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid applications of any voltage higher than maximum rated voltages to this high imped- ance circuit. For proper operation it is recom- mended that Vin and Vout be constrained to the range VSS ≤ (Vin or Vout) ≤ VDD. Reliability of operation is enhanced if unused inputs are tied to an appropriate logic voltage level (e.g., either VSS or VDD). |
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