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IDT54FCT245P Datasheet(PDF) 4 Page - Integrated Device Technology |
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IDT54FCT245P Datasheet(HTML) 4 Page - Integrated Device Technology |
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4 / 6 page  IDT54/74FCT3245/A 3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES 8.12 4 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 = 3.3V, +25 °C ambient. 3. Per TTL driven input; 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 (fCPNCP/2 + fiNi) ICC = Quiescent Current (ICCL, ICCH and ICCZ) ∆ICC = Power Supply Current for a TTL High Input 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) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) NCP = Number of Clock Inputs at fCP fi = Input Frequency Ni = Number of Inputs at fi 2650 tbl 06 SWITCHING CHARACTERISTICS OVER OPERATING RANGE (3) NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. Propagation Delays and Enable/Disable times are with VCC = 3.3V ±0.3V, Normal Range. For VCC = 2.7V to 3.6V, Extended Range, all Propagation Delays and Enable/Disable times should be degraded by 20%. 4. This parameter is guaranteed but not tested. 2650 tbl 07 Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit ∆ICC Quiescent Power Supply Current VCC = Max. VIN = VCC – 0.6V(3) — 2.0 30 µA ICCD Dynamic Power Supply Current(4) VCC = Max. Outputs Open OE = DIR = GND One Input Toggling 50% Duty Cycle VIN = VCC VIN = GND —60 85 µA/ MHz IC Total Power Supply Current(6) VCC = Max. VIN = VCC — 0.6 0.9 mA Outputs Open VIN = GND fi =10MHz 50% Duty Cycle VIN = VCC –0.6V — 0.6 0.9 OE = DIR = GND One Bit Toggling VIN = GND VCC = Max. Outputs Open fi = 2.5MHz VIN = VCC VIN = GND — 1.2 1.7(5) 50% Duty Cycle OE = DIR = GND Eight Bits Toggling VIN = VCC –0.6V VIN = GND — 1.2 1.8(5) FCT3245 FCT3245A Com'l. Mil. Com'l. Mil. Symbol Parameter Condition(1) Min.(2) Max. Min.(2) Max. Min.(2) Max. Min.(2) Max. Unit tPLH tPHL Propagation Delay A to B, B to A CL = 50pF RL = 500 Ω 1.5 7.0 1.5 7.5 1.5 4.6 1.5 4.9 ns tPZH tPZL Output Enable Time OE to A or B 1.5 9.5 1.5 10.0 1.5 6.2 1.5 6.5 ns tPHZ tPLZ Output Disable Time OE to A or B 1.5 7.5 1.5 10.0 1.5 5.0 1.5 6.0 ns tPZH tPZL Output Enable Time DIR to A or B(4) 1.5 9.5 1.5 10.0 1.5 6.2 1.5 6.5 ns tPHZ tPLZ Output Disable Time DIR to A or B(4) 1.5 7.5 1.5 10.0 1.5 5.0 1.5 6.0 ns |
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