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SN74ACT7808-40PAG Scheda tecnica(PDF) 10 Page - Texas Instruments |
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SN74ACT7808-40PAG Scheda tecnica(HTML) 10 Page - Texas Instruments |
10 / 18 page SN74ACT7808 2048 × 9 STROBED FIRST-IN, FIRST-OUT MEMORY SCAS205E – FEBRUARY 1991 – REVISED NOVEMBER 2001 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance per FIFO channel Outputs enabled CL = 50 pF, f = 5 MHz 91 pF PARAMETER MEASUREMENT INFORMATION VOH VOL th tPLH tPHL Output Control Output Waveform 1 S1 at 7 V Output Waveform 2 S1 at Open tPZL tPZH tPLZ tPHZ 1.5 V 1.5 V 1.5 V 1.5 V 3 V 0 V 1.5 V 1.5 V VOH VOL 0 V 1.5 V VOL + 0.3 V 1.5 V VOH – 0.3 V ≈ 0 V 1.5 V 3 V 0 V 1.5 V 1.5 V 0 V 3 V 0 V 1.5 V 1.5 V tw Input 3 V 3 V ≈ 3.5 V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES Timing Input Data Input Output Input S1 500 Ω LOAD CIRCUIT 500 Ω 7 V From Output Under Test Test Point NOTE A: CL includes probe and jig capacitance. CL = 50 pF (see Note A) tsu tPZH tPZL tPHZ tPLZ tPLH tPHL Open Closed Open Closed Open Open PARAMETER S1 ten tdis tpd Figure 3. Load Circuit and Voltage Waveforms |
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