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54ACT16657WD 数据表(PDF) 7 Page - Texas Instruments |
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54ACT16657WD 数据表(HTML) 7 Page - Texas Instruments |
7 / 8 page 54ACT16657, 74ACT16657 16-BIT TRANSCEIVERS WITH PARITY GENERATORS/CHECKERS AND 3-STATE OUTPUTS SCAS164A – JANUARY 1991 – REVISED APRIL 1996 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT C d Power dissipation capacitance per transceiver Outputs enabled CL =50 pF f=1MHz 76 pF Cpd Power dissipation capacitance per transceiver Outputs disabled CL = 50 pF, f = 1 MHz 35 pF PARAMETER MEASUREMENT INFORMATION From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT S1 2 × VCC 500 Ω 500 Ω tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 × VCC GND tPHL tPLH Output Control (low-level enabling) Output Waveform 1 S1 at 2 × VCC (see Note B) Output Waveform 2 S1 at GND (see Note B) VOL VOH tPZL tPZH tPLZ tPHZ 1.5 V 1.5 V 1.5 V 1.5 V [ VCC 3 V 0 V 50% VCC 50% VCC VOH VOL 0 V 50% VCC 20% VCC 50% VCC 80% VCC [ 0 V 3 V GND Open Input Output VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS TEST S1 NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns. D. The outputs are measured one at a time with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms |
类似零件编号 - 54ACT16657WD |
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类似说明 - 54ACT16657WD |
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