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SN74ACT8997NT Datasheet(PDF) 17 Page - Texas Instruments |
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SN74ACT8997NT Datasheet(HTML) 17 Page - Texas Instruments |
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17 / 28 page  SN54ACT8997, SN74ACT8997 SCAN-PATH LINKERS WITH 4-BIT IDENTIFICATION BUSES SCAN-CONTROLLED IEEE STD 1149.1 (JTAG) TAP CONCATENATORS SCAS157D – APRIL 1990 – REVISED DECEMBER 1996 17 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Table 9. Scan-Path Configurations SR BIT SSP CONFIGURATION SCAN PATH CONFIGURATION†‡ 7 5 3 1 SSP4 SSP3 SSP2 SSP1 SCAN-PATH CONFIGURATION†‡ 0 0 0 0 Inactive Inactive Inactive Inactive TDI–SPL–TDO 0 0 0 1 Inactive Inactive Inactive Active TDI–(1)–SSP1–SPL–TDO 0 0 1 0 Inactive Inactive Active Inactive TDI–(1)–SSP2–SPL–TDO 0 0 1 1 Inactive Inactive Active Active TDI–(1)–SSP1–(1)–SSP2–SPL–TDO 0 1 0 0 Inactive Active Inactive Inactive TDI–(1)–SSP3–SPL–TDO 0 1 0 1 Inactive Active Inactive Active TDI–(1)–SSP1–(1)–SSP3–SPL–TDO 0 1 1 0 Inactive Active Active Inactive TDI–(1)–SSP2–(1)–SSP3–SPL–TDO 0 1 1 1 Inactive Active Active Active TDI–(1)–SSP1–(1)–SSP2–(1)–SSP3–SPL–TDO 1 0 0 0 Active Inactive Inactive Inactive TDI–(1)–SSP4–SPL–TDO 1 0 0 1 Active Inactive Inactive Active TDI–(1)–SSP1–(1)–SSP4–SPL–TDO 1 0 1 0 Active Inactive Active Inactive TDI–(1)–SSP2–(1)–SSP4–SPL–TDO 1 0 1 1 Active Inactive Active Active TDI–(1)–SSP1–(1)–SSP2–(1)–SSP4–SPL–TDO 1 1 0 0 Active Active Inactive Inactive TDI–(1)–SSP3–(1)–SSP4–SPL–TDO 1 1 0 1 Active Active Inactive Active TDI–(1)–SSP1–(1)–SSP3–(1)–SSP4–SPL–TDO 1 1 1 0 Active Active Active Inactive TDI–(1)–SSP2–(1)–SSP3–(1)–SSP4–SPL–TDO 1 1 1 1 Active Active Active Active TDI–(1)–SSP1–(1)–SSP2–(1)–SSP3–(1)–SSP4–SPL–TDO † The scan-path configuration is the order of scan, beginning with the TDI of the ’ACT8997 and ending with the TDO of the ’ACT8997. ‡ A (1) indicates one bit of delay through the ’ACT8997. SPL indicates the selected scan register within the ’ACT8997. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)§ Supply voltage range, VCC –0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, VI (see Note 1) –0.5 V to VCC + 0.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range, VO (see Note 1) –0.5 V to VCC + 0.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0 or VI > VCC) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output clamp current, IOK (VI < 0 or VI > VCC) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output current, IO (VO = 0 to VCC) ±25 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DW package 1.7 W . . . . . . . . . . . . . . . . . . NT package 1.3 W . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The maximum package power dissipation is calculated using a junction temperature of 150 °C and a board trace length of 750 mils, except for the NT package, which has trace length of zero. For more information, refer to the Package Thermal Considerations application note in the ABT Advanced BiCMOS Technology Data Book, literature number SCBD002. |
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