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IDT74FCT138ATEB Datasheet(PDF) 4 Page - Integrated Device Technology |
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IDT74FCT138ATEB Datasheet(HTML) 4 Page - Integrated Device Technology |
4 / 6 page 6.3 4 IDT54/74FCT138T/AT/CT FAST CMOS 1-OF-8 DECODER-WITH ENABLE MILITARY AND COMMERCIAL TEMPERATURE RANGES POWER SUPPLY CHARACTERISTICS NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25 °C ambient. 3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the ICC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (foNo) ICC = Quiescent Current ∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fo = Output Frequency No = Number of Outputs at fo All currents are in milliamps and all frequencies are in megahertz. 2570 tbl 06 SWITCHING CHARACTERISTICS OVER OPERATING RANGE NOTES: 2570 tbl 07 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit ∆ICC Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = 3.4V(3) — 0.5 2.0 mA ICCD Dynamic Power Supply Current(4) VCC = Max. Outputs Open One Bit Toggling 50% Duty Cycle VIN = VCC VIN = GND — 0.15 0.3 mA/ MHz IC Total Power Supply Current(6) VCC = Max. Outputs Open Toggle E1, E2 or E3 VIN = VCC VIN = GND — 1.5 4.0 mA 50% Duty Cycle fo = 10MHz One Input and One Output Toggling VIN = 3.4V VIN = GND — 1.8 5.0 FCT138T FCT138AT FCT138CT Com'l. Mil. Com'l. Mil. Com'l. Mil. Symbol Parameter Condition(1) Min. (2) Max. Min. (2) Max. Min. (2) Max. Min. (2) Max. Min. (2) Max. Min. (2) Max. Unit tPLH tPHL Propagation Delay An to On CL = 50pF RL = 500 Ω 1.5 9.0 1.5 12.0 1.5 5.8 1.5 7.8 1.5 5.1 1.5 6.0 ns tPLH tPHL Propagation Delay E1 or E2 to On 1.5 9.0 1.5 12.5 1.5 5.9 1.5 8.0 1.5 5.2 1.5 6.1 ns tPLH tPHL Propagation Delay E3 to On 1.5 9.0 1.5 12.5 1.5 5.9 1.5 8.0 1.5 5.2 1.5 6.1 ns |
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