IDT74FST163211 24-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE 24-BIT BUS SWITCH IDT74FST163211 DESCRIPTION: FEATURES: The FST163211 belongs to IDT's family of Bus switches. Bus switch devices perform the function of connecting or isolating two ports without providing any inherent current sink or source capability. Thus they generate little or no noise of their own while providing a low resistance path for an external driver. These devices connect input and output ports through an n-channel FET. When the gate-to-source junction of this FET is adequately forward-biased, the device conducts and the resistance between input and output ports is small. Without adequate bias on the gateto-source junction of the FET, the FET is turned off, therefore with no VCC applied, the device has hot insertion capability. The low on-resistance and simplicity of the connection between input and output ports reduces the delay in this path to close to zero. • • • • Bus switches provide zero delay paths Ω Low switch on-resistance; 5Ω TTL-compatible input and output levels ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) • Available in TSSOP package FUNCTIONAL BLOCK DIAGRAM 1A1 1B1 1A12 1B12 2A1 2B1 2A12 2B12 1OE 2OE The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE JANUARY 2004 1 © 2004 Integrated Device Technology, Inc. DSC-3685/3 IDT74FST163211 24-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) NC 1 56 1OE 1A 1 2 55 2OE 1A 2 3 54 1B 1 1A 3 4 53 1B 2 1A 4 5 52 1B 3 1A 5 6 51 1B 4 1A 6 7 50 1B 5 GND 8 49 GND 1A 7 9 48 1B 6 1A 8 10 47 1B 7 1A 9 11 46 1B 8 1A10 12 45 1B 9 1A11 13 44 1B10 1A12 14 43 1B11 2A 1 15 42 1B12 2A 2 16 41 2B 1 VCC 17 40 2B 2 Symbol Description Max Unit VTERM(2) Terminal Voltage with Respect to GND –0.5 to +7 V TSTG Storage Temperature –65 to +150 °C IOUT Maximum Continuous Channel Current 128 mA NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. Vcc, Control, and Switch terminals. CAPACITANCE(1) Symbol Conditions(2) Parameter CIN Control Input Capacitance CI/O Switch Input/Output Capacitance Switch Off NOTES: 1. Capacitance is characterized but not tested. 2. TA = 25°C, f = 1MHz, VIN = 0V, VOUT = 0V. PIN DESCRIPTION Pin Names I/O xAx xBx xOE I/O I/O I Description Bus A Bus B Switch Enable 2A 3 18 39 2B 3 GND 19 38 GND 2A 4 20 37 2B 4 2A 5 21 36 2B 5 2A 6 22 35 2B 6 2A 7 23 34 2B 7 2A 8 24 33 2A 9 25 32 2B 9 1 OE 2OE 2A10 26 31 2B10 L L 1A = 1B 2A11 27 30 2B11 L H 1A = 1B 2A12 28 29 2B12 H L Z H H Z FUNCTION TABLE(1) 2B 8 1A, 1B NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance TSSOP TOP VIEW 2 2A, 2B 2A 2A Description = 2B Connect Z Bank 1 Connect = 2B Bank 2 Connect Z Disconnect Typ. Unit 6 pF 12 pF IDT74FST163211 24-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = –40°C to +85°C, VCC = 5.0V ± 10% Symbol Test Conditions(1) Parameter Min. Typ.(2) Max. Unit VIH Control Input HIGH Voltage Guaranteed Logic HIGH for Control Inputs 2 — — V VIL Control Input LOW Voltage Guaranteed Logic LOW for Control Inputs — — 0.8 V IIH Control Input HIGH Current VCC = Max. VI = VCC — — ±1 µA IIL Control Input LOW Current VI = GND — — ±1 — — ±1 — — ±1 IOZH Current During IOZL Bus Switch Disconnect VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — –0.7 –1.2 V IOFF Switch Power Off Leakage VCC = 0V, VIN or VO ≤ 5.5V — — ±1 µA ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC — 0.1 3 µA VCC = Max., VO = 0 to 5V µA BUS SWITCH IMPEDANCE OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40°C to +85°C, VCC = 5.0V ±10% Symbol Parameter RON Switch On Resistance(2) IOS Short Circuit Current, A to B(3) Test Conditions Vcc = Min., VIN = 0V, ION = 64mA Vcc = Min., VIN = 0V, ION = 30mA Vcc = Min., VIN = 2.4V, ION = 15mA Vcc = Max., Vo =GND NOTES: 1. Typical values are at Vcc = 5.0V, +25°C ambient. 2. The voltage drop between the indicated ports divided by the current through the switch. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 3 Min. — — — — (1) Typ. 5 5 — 300 Max. 6 7 15 — Unit Ω mA IDT74FST163211 24-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Test Conditions(1) Min. Typ.(2) Max. Unit — 0.5 1.5 mA VIN = VCC VIN = GND — 240 320 µA/ MHz/ Switch VCC = Max. One Enable Pin Toggling fi = 10MHz 50% Duty Cycle VIN = VCC VIN = GND VIN = 3.4V VIN = GND — 2.4 3.2 mA — 2.7 4 VCC = Max. Two Enable Pins Toggling fi = 10MHz 50% Duty Cycle VIN = VCC VIN = GND VIN = 3.4V VIN = GND — 4.8 6.4 — 5.4 8 Symbol Parameter ∆ICC Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = 3.4V(3) ICCD Dynamic Power Supply Current(4,5) VCC = Max. One Enable Pin Toggling 50% Duty Cycle Total Power Supply Current(6) IC 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 ∆ICC. 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 + ∆ICC DHNT + ICCD (fiN) 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) 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% Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ |QCI| Description(1) Data Propagation Delay A to B, B to A(2) Switch CONNECT Delay xOE to A or B Switch DISCONNECT Delay xOE to A or B Charge Injection During Switch DISCONNECT xOE to A or B(3) VCC = 4V Min. Typ. Max. Max. Unit — — 0.25 0.25 ns 1.5 — 6.5 7 ns 1.5 — 5.5 7 ns — 1.5 — — pC 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. 4 IDT74FST163211 24-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS V CC 7.0V 500Ω tPLH V OUT VIN Pulse Generator tPHL VOH 1.5V VOL OUTPUT D.U.T. tPLH 50pF RT 3V 1.5V 0V SAME PHASE INPUT TRANSITION 500Ω tPHL 3V 1.5V 0V OPPOSITE PHASE INPUT TRANSITION CL Propagation Delay Test Circuits for All Outputs DATA INPUT SWITCH POSITION Test Switch Open Drain Disable Low Enable Low Closed ASYNCHRONOUS CONTROL All Other Tests Open tREM SYNCHRONOUS CONTROL DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. tH tSU TIMING INPUT 3V 1.5V 0V 3V 1.5V 0V tSU 3V 1.5V 0V 3V 1.5V 0V tH Set-up, Hold, and Release Times VCC ENABLE 1 MHz Signal Generator (1) Enable/Select Switch In Switch D.U.T. Out Switch In (MUX) (2) VOUT DISABLE (3) 3V CONTROL INPUT 1.5V tPZL CL = 50pF OUTPUT NORMALLY LOW SWITCH CLOSED OUTPUT NORMALLY HIGH NOTES: 1. Select is used with multiplexers for measuring IQDCII during multiplexer select. During all other tests Enable is used. 2. Used with multiplexers to measure IQDCII only. 3. Charge Injection = ∆VOUT CL, with Enable toggling for IQCII or Select toggling for IQDCII. ∆VOUT is the change in VOUT and is measured with a 10MΩ probe. SWITCH OPEN 3.5V 3.5V 1.5V tPZH Charge Injection 0V tPLZ 0.3V VOL tPHZ 0.3V VOH 1.5V 0V 0V Enable and Disable Times NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns. LOW-HIGH-LOW PULSE 1.5V tW HIGH-LOW-HIGH PULSE 1.5V Pulse Width 5 IDT74FST163211 24-BIT BUS SWITCH INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDT XX FST Temp. Range XXX Family XXX Device Type X Package PA PAG Thin Shrink Small Outline Package TSSOP - Green 211 24-Bit Bus Switch 163 Double-Density Bus Switch 74 –40°C to +85°C DATA SHEET DOCUMENT HISTORY 5/24/2002 Removed TVSOP package CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 6 for Tech Support: [email protected] (408) 654-6459