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ST2349QTR 데이터시트(PDF) 11 Page - STMicroelectronics |
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ST2349QTR 데이터시트(HTML) 11 Page - STMicroelectronics |
11 / 23 page ST2349 Electrical characteristics 11/23 5.1 AC characteristics (device driven by open drain driver) Table 7. AC characteristics - test conditions: VL = 1.65 −1.8 V (load CL =15pF; Rup =4.7 kΩ; driver tr =tf ≤ 2 ns) over temperature range -40 °C to 85 °C Symbol Parameter VCC =1.8 −2.5 V V CC =2.7 −3.6 V VCC =4.3 − 5.5 V Unit Min Max Min Max Min Max tRVCC Rise time I/OVCC 80 50 30 ns tFVCC Fall time I/OVCC 33 3 ns tRVL Rise time I/OVL 76 6 ns tFVL Fall time I/OVL 45 5 ns tI/OVL-VCC Propagation delay time I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL tPLH 55 5 ns tPHL 55 5 ns tI/OVCC-VL Propagation delay time I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-LH tPLH 55 5 ns tPHL 57 7 ns tPZL tPZH tPLZ tPHZ Output enable and disable time En 10 10 10 ns Dis 40 40 40 ns DR Data rate(1) 1.6 2.5 4 MHz 1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%. Table 8. AC characteristics - test conditions: VL =2.5 −2.7 V (load CL =15pF; Rup =4.7 kΩ; driver tr =tf ≤ 2 ns) over temperature range -40 °C to 85 °C Symbol Parameter VCC =2.7 −3.6 V VCC =4.3 − 5.5 V Unit Min Max Min Max tRVCC Rise time I/OVCC 70 40 ns tFVCC Fall time I/OVCC 33 ns tRVL Rise time I/OVL 55 ns tFVL Fall time I/OVL 33 ns tI/OVL-VCC Propagation delay time I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL tPLH 22 ns tPHL 33 ns tI/OVCC-VL Propagation delay time I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-LH tPLH 33 ns tPHL 44 ns |
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