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SN74ACT7801-20FN Folha de dados(PDF) 11 Page - Texas Instruments |
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SN74ACT7801-20FN Folha de dados(HTML) 11 Page - Texas Instruments |
11 / 19 page SN74ACT7801 1024 × 18 CLOCKED FIRST IN, FIRST OUT MEMORY SCAS111 − D3489, APRIL 1990 − REVISED MAY 1991 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage applied to a disabled 3-state output 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. recommended operating conditions ′ACT7801-15 ′ACT7801-18 ′ACT7801-20 UNIT MIN MAX MIN MAX MIN MAX UNIT VCC Supply voltage 4.5 5.5 4.5 5.5 4.5 5.5 V VIH High-level input voltage 2 2 2 V VIL Low-level input voltage 0.8 0.8 0.8 V IOH High-level output current −8 −8 −8 mA IOL Low-level output current 16 16 16 mA fclock Clock frequency 40 35 28.5 MHz Data in (D0 − D17) high or low 10 12 14 WRTCLK high 7 8.5 10 WRTCLK low 15 15 15 tw Pulse duration RDCLK high 7 8.5 10 ns tw Pulse duration RDCLK low 15 15 15 ns DAF high 10 10 10 WRTEN1, WRTEN2 high or low 10 10 10 OE, RDEN1, RDEN2 high or low 10 10 10 Data in (D0 − D17) before WRTCLK ↑ 5 5 5 WRTEN1, WRTEN2 before WRTCLK ↑ 5 5 5 OE, RDEN1, RDEN2 before RDCLK ↑ 5 5 5 tsu Setup time Reset: RESET low before first WRTCLK and RDCLK ↑ 7 7 7 ns Define AF/AE: D0 − D8 before DAF ↓ 5 5 5 Define AF/AE: DAF ↓ before RESET↑ 7 7 7 Define AF/AE (default): DAF high before RESET ↑ 5 5 5 Data in (D0 − D17) after WRTCLK ↑ 1 1 1 WRTEN1, WRTEN2 after WRTCLK ↑ 1 1 1 OE, RDEN1, RDEN2 after RDCLK ↑ 1 1 1 th Hold time Reset: RESET low after fourth WRTCLK and RDCLK ↑ 0 0 0 ns Define AF/AE: D0 − D8 after DAF ↓ 1 1 1 Define AF/AE: DAF low after RESET ↑ 0 0 0 Define AF/AE (default): DAF high after RESET ↑ 1 1 1 TA Operating free-air temperature 0 70 0 70 0 70 °C |
Nº de peça semelhante - SN74ACT7801-20FN |
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Descrição semelhante - SN74ACT7801-20FN |
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