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74ACQ657 数据表(PDF) 6 Page - Fairchild Semiconductor |
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74ACQ657 数据表(HTML) 6 Page - Fairchild Semiconductor |
6 / 10 page www.fairchildsemi.com 6 AC Electrical Characteristics for ACQ Note 13: Voltage Range 3.3 is 3.3V ± 0.3V Voltage Range 5.0 is 5.0V ± 0.5V Note 14: Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs within the same packaged device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design. Not tested. Note 15: These delay times reflect the 3-STATE recovery time only and not the signal time through the buffers or the parity check circuitry. To assure VALID information at the ERROR pin, time must be allowed for the signal to propagate through the drivers (B to A), through the parity check circuitry (same as A to PARITY), and to the ERROR output after the ERROR pin has been enabled (Output Enable times). VALID data at the ERROR pin ≥ (A to PARITY) +(Output Enable Time). VCC TA = 25°CTA = −40°C to +85°C Symbol Parameter (V) CL = 50 pF CL = 50 pF Units (Note 13) Min Typ Max Min Max tPLH Propagation Delay 3.3 2.5 8.0 11.5 2.5 12.0 ns tPHL An to Bn, Bn to An 5.0 1.5 5.0 7.5 1.5 8.0 tPLH Propagation Delay 3.3 3.0 11.5 16.5 3.0 17.0 ns tPHL An to Parity 5.0 2.0 7.0 10.5 2.0 11.0 tPLH Propagation Delay 3.3 3.0 10.0 15.0 3.0 15.5 ns tPHL ODD/EVEN to PARITY 5.0 2.5 6.5 10.0 2.5 10.5 tPLH Propagation Delay 3.3 3.0 10.0 15.0 3.0 15.5 ns tPHL ODD/EVEN to ERROR 5.0 2.5 6.5 10.0 2.5 10.5 tPLH Propagation Delay 3.3 3.5 11.5 16.0 3.5 16.5 ns tPHL Bn to ERROR 5.0 2.5 7.0 10.5 2.5 11.0 tPLH Propagation Delay 3.3 3.0 9.0 13.5 3.0 14.0 ns tPHL PARITY to ERROR 5.0 2.0 6.0 9.0 2.0 9.5 tPZH Output Enable Time 3.3 2.5 9.0 13.5 2.5 14.0 ns tPZL OE to An/Bn 5.0 2.0 6.0 9.0 2.0 9.5 tPHZ Output Disable Time 3.3 1.0 8.5 13.0 1.0 13.5 ns tPLZ OE to An/Bn 5.0 1.0 5.5 8.5 1.0 9.0 tPZH Output Enable Time 3.3 2.5 9.0 13.5 2.5 14.0 ns tPZL OE to ERROR (Note 15) 5.0 2.0 6.0 9.0 2.0 9.5 tPHZ Output Disable Time 3.3 1.0 8.5 13.0 1.0 13.5 ns tPLZ OE to ERROR 5.0 1.0 5.5 8.5 1.0 9.0 tPZH Output Enable Time 3.3 2.5 9.0 13.5 2.5 14.0 ns tPZL OE to PARITY 5.0 2.0 6.0 9.0 2.0 9.5 tPHZ Output Disable Time 3.3 1.0 8.5 13.0 1.0 13.5 ns tPLZ OE to PARITY 5.0 1.0 5.5 8.5 1.0 9.0 tOSHL Output to Output Skew (Note 14) 3.3 1.0 1.5 1.5 ns tOSLH An, Bn to Bn, An 5.0 0.5 1.0 1.0 |
类似零件编号 - 74ACQ657 |
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类似说明 - 74ACQ657 |
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