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IDT74FST1632861PVG Datasheet(PDF) 4 Page - Integrated Device Technology |
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IDT74FST1632861PVG Datasheet(HTML) 4 Page - Integrated Device Technology |
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4 / 6 page  4 INDUSTRIALTEMPERATURERANGE IDT74FST1632861 20-BIT, TWO PORT BUS SWITCH WITH RESISTOR Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit ΔICC Quiescent Power Supply Current VCC = Max. — 0.5 1.5 mA TTL Inputs HIGH VIN = 3.4V(3) ICCD Dynamic Power Supply VCC = Max. VIN = VCC — 30 400 µA/ Current(4,5) Outputs Open VIN = GND MHz/ Select Input Togging Select 50% Duty Cycle IC Total Power Supply Current(6) VCC = Max. VIN = VCC — 0.6 8 mA Outputs Open VIN = GND Two Enable Pins Toggling VIN = 3.4V — 0.7 9.5 fi = 10MHz VIN = GND 50% Duty Cycle POWER SUPPLY CHARACTERISTICS NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. TA = –40°C to +85°C 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. Switch inputs do not contribute to ΔICC. 4. This parameter represents the current required to switch the internal capacitance of the control inputs at the specified frequency. Switch inputs generate no significant power supply currents as they transition. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. CPD = ICCD/VCC CPD = Power Dissipation Capacitance 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ΔICC DHNT + ICCD (fiN) ICC = Quiescent Current ΔICC = 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) fi = Control Input Frequency N = Number of Control Inputs Toggling at fi SWITCHING CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40°C to +85°C, VCC = 5.0V ± 10% VCC = 5V ± 10% VCC = 4V Symbol Description(1) Min. Typ. Max. Max. Unit tPLH Data Propagation Delay — — 0.25 0.25 ns tPHL A to B, Y to B(2) tPZH Switch CONNECT Delay 1.5 — 6.5 7 ns tPZL x OE to A or B tPHZ Switch DISCONNECT Delay 1.5 — 7 7 ns tPLZ x OE to A or B |QCI| Charge Injection During Switch DISCONNECT, — 1.5 — — pC x OE to A or B(3) NOTES: 1. See test circuits and waveforms. 2. The bus switch contributes no Propagation Delay other than the RC Delay of the load interacting with the RC of the switch. 3. |QCI| is the charge injection for a single switch DISCONNECT and applies to either single switches or multiplexers. |QDCI| is the charge injection for a multiplexer as the multiplexed port switches from one path to another. Charge injection is reduced because the injection from the DISCONNECT of the first path is compensated by the CONNECT of the second path. |
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