IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE QUICKSWITCH® PRODUCTS HIGH-SPEED CMOS SYNCHROSWITCH™ 32:16 MUX/DEMUX IDTQS34XS257 FEATURES: DESCRIPTION: • • • • • • • • • • • The QS34XS257 is a high-speed CMOS quad 32:16 multiplexer/ demultiplexer. It is organized as four independent quad 2:1 mux/demux blocks. Port selection and connection, controlled by SEL signals, can be either asynchronous or synchronous. In the synchronous mode, the A or B port to Y port connection is updated on the rising edge of the input clock CLK. Once the port-to-port connection is made, data flow can be bidirectional with a typical 250ps propagation delay through the switch. Clock Enable, overriding Asynchronous Enable, and Asynchronous Select controls provide additional design flexibility. Synchronous controls ease timing constraints in many high speed data mux/demux applications, such as bank interleaving. The QS34XS257 is available in the space-saving, 80-pin dual-in-line MillipaQ package. The QS34XS257 is characterized for operation at -40°C to +85°C. Enhanced N channel FET with no inherent diode to Vcc Bidirectional signal flow Flow-through pinout Zero propagation delay, zero ground bounce 16 banks of 2:1 Mux/Demux Port select synchronous to the clock Clock enable and asynchronous enable Undershoot clamp diodes on all switch and control inputs Asynchronous SEL option Break-before-make feature Bus-hold eliminates floating bus lines and reduces static power consumption • Available in 80-pin Millipaq package APPLICATIONS: • Memory interleaving FUNCTIONAL BLOCK DIAGRAM SELn CLKn CONTROL LOGIC CLKENn OEn SYNCn An 0 Yn 0 Bn 0 An 1 Yn 1 Bn 1 An 2 Yn 2 Bn 2 An 3 Yn 3 Bn 3 NOTE: 1. One of four blocks shown. The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE JUNE 2006 1 c 2006 Integrated Device Technology, Inc. DSC-5578/3 IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) 80 Symbol Description Max Unit Vcc VTERM(2) Supply Voltage to Ground –0.5 to +7 V OE 0 VTERM(3) DC Switch Voltage Vs –0.5 to +7 V VTERM(3) DC Input Voltage VIN –0.5 to +7 V VAC AC Input Voltage (pulse width ≤ 20ns) –3 V IOUT DC Output Current 120 mA PMAX Maximum Power Dissipation (TA = 85°C) 1.16 W TSTG Storage Temperature –65 to +150 °C NC 1 A 00 2 79 A 01 3 78 SEL 0 A 02 4 77 Y 00 A 03 5 B 00 6 B 01 76 Y 01 75 Y 02 7 74 Y 03 B 02 8 73 CLKEN 0 B 03 9 72 CLK 0 GND 10 71 SYNC 0 NC 11 70 Vcc A 10 12 69 OE 1 A 11 13 68 SEL 1 A 12 14 67 Y 10 A 13 15 66 Y 11 B 10 16 65 Y 12 B 11 17 64 Y 13 B 12 18 63 CLKEN 1 B 13 19 62 CLK 1 GND 20 61 NOTE: 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 terminals. 3. All terminals except Vcc. CAPACITANCE (TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V) SYNC 1 Pins Typ. Max.(1) Control Pins 4 5 pF pF Quickswitch Channels Demux 5 7 (Switch OFF) Mux 7 9 NC 21 60 Vcc A 20 22 59 OE 2 A 21 23 58 SEL 2 A 22 24 57 Y 20 A 23 25 56 Y 21 B 20 26 55 Y 22 B 21 27 54 Y 23 Pin Names I/O B 22 28 53 CLKEN 2 An0 - An3 I/O B 23 29 52 CLK 2 Bn0 - Bn3 I/O Demux Port B GND 30 51 SYNC 2 Yn0 - Yn3 I/O Mux Port Y NC 31 50 Vcc SELn I Select Input A 30 32 49 OE 3 CLKn I Clock A 31 33 48 SEL 3 CLKENn I Clock Enable A 32 34 47 Y 30 OEn I Output Enable A 33 35 46 Y 31 SYNCn I Synchronous Selection Enable B 30 36 45 Y 32 B 31 37 44 Y 33 B 32 38 43 CLKEN 3 B 33 39 42 CLK 3 GND 40 41 SYNC 3 NOTE: 1. This parameter is measured at characterization but not tested. PIN DESCRIPTION MILLIPAQ (Q3) TOP VIEW 2 Description Demux Port A Unit IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE FUNCTION TABLE(1) Control Inputs Port Status SYNC OEn CLKn CLKENn SELn Yn0 Yn1 Yn2 Yn3 L L ↑ L L An0 An1 An2 An3 Select Port A L L ↑ L H Bn0 Bn1 Bn2 Bn3 Select Port B L H ↑ L X No change in Mux connection Switch OFF (2) L L ↑ H X No change in Mux connection Hold Previous Mux connection (3) (Switch ON) L H ↑ H X No change in Mux connection Switch OFF (4) H L X X L An0 An1 An2 An3 Select Port A H L X X H Bn0 Bn1 Bn2 Bn3 Select Port B H H X X X No change in Mux connection Function Hold Previous Data (Switch OFF) NOTES: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care ↑ = LOW-to-HIGH Transition 2. Mux switches are turned off. The port connection can be changed by the SEL input. 3. The contents of the “Mux select register” are unchanged and the previous Mux connection is unchanged. The output (Mux port) data state will depend on the present data state of the input (Demux port). 4. The contents of the “Mux select register” are unchanged. CONTROL LOGIC (1) 1 2:1 MU X SE Ln D Q 0 2:1 MUX 0 To Port B Switches 1 CLKEN n CLKn SYN Cn To Port A Switches OEn NOTE: 1. One of four blocks. 3 IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX 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 Parameter Test Conditions Min. Typ.(1) Max. Unit VIH Input HIGH Level Guaranteed Logic HIGH for Control Pins 2 — — V VIL Input LOW Level Guaranteed Logic LOW for Control Pins — — 0.8 V IIN Input LeakageCurrent (Control Inputs) 0V ≤ VIN ≤ VCC — 0.1 ±1 µA Switch ON Resistance(2,3) VCC = Min., VIN = 0V, ION = 30mA VCC = Min., VIN = 2.4V, ION =15mA — — 7 10 9 13 Ω RON NOTES: 1. Typical values are at VCC = 5.0V, TA = 25°C. 2. Max value of RON is guaranteed but not production tested. 3. Measured by voltage drop between A/B and Y pin at indicated current through the switch. TYPICAL ON RESISTANCE vs VIN AT VCC = 5V 16 R ON (ohms) 14 12 10 8 6 4 2 0 0.0 0.5 1.0 1.5 2.0 V IN (Volts) 4 2.5 3.0 3.5 IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol Test Conditions(1) Parameter Max. Unit ICCQ Quiescent Power Supply Current VCC = Max., VCTRL = GND or Vcc, f = 0 12 mA ΔICC Power Supply Current per Control Input HIGH (2) VCC = Max., VIN = 3.4V, f = 0 1.5 mA ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., A/B and Y pins open 0.25 mA/MHz Control Inputs Toggling at 50% Duty Cycle NOTES: 1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics. 2. Per TLL driven input (VIN = 3.4V, control inputs only). A/B and Y pins do not contribute to ΔIcc. 3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A/B and Y inputs generate no significant AC or DC currents as they transition. This parameter is guaranteed but not production tested. SWITCHING CHARACTERISTICS OVER OPERATING RANGE TA = -40°C to +85°C, VCC = 5.0V ± 10%; CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted. Symbol Parameter Min. (1) Typ. Max. Unit — 0.25 — ns tPLH Data Propagation Delay (2,3) tPHL A/B to Y, Y to A/B tSEC Clock Enable to Clock Setup Time 3 — — ns tHEC Clock Enable to Clock Hold Time 0 — — ns tCSO Clock to A, B Switch Turn-On Delay 0.5 — 7 ns tASO Asynchronous Select to A, B Switch Turn-On Delay 0.5 — 7 ns tW Clock Pulse Width HIGH 3 — — ns tSCS Clock to SEL Setup Time 3 — — ns tHCS Clock to SEL Hold Time 0 — — ns tPZL tPZH Asynchronous Enable to Switch Turn-On Delay 1.5 — 5.2 ns tPLZ tPHZ Asynchronous Enable to Switch Turn-Off Delay (2) 1.5 — 4.8 ns NOTES: 1. Minimums are guaranteed but not production tested. 2. This parameter is guaranteed but not production tested. 3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for CL = 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the system. Propagation delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. 5 IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE TIMING WAVEFORMS - SYNCHRONOUS MODE, DEMUX FUNCTION SYNC t SEC t HEC CLKEN CLK t SC S t HCS t SC S t HCS SEL OE Port Y DATA 0 DATA 2 DATA 1 t PLH , t PHL t CSO Port A INV ALID D ATA DATA 0 DATA 1 HOLD PR EVIOUS DATA, DATA 1 t PLH , t PHL t CSO Port B INVALID D ATA DATA 1 6 DATA 2 HOLD PR EVIOUS DATA, DATA 2 IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE TIMING WAVEFORMS - SYNCHRONOUS MODE, MUX FUNCTION SYNC t SEC t HEC CLKEN CLK t SC S t HCS t SC S t HCS SEL0, SEL1 Port A Port D DATA1 DATA2 INVALID D ATA DATA3 DATA4 t CSO t PLH, t PH L Port Y INVALID D ATA DATA1 t CSO DATA2 t PLH, t PH L DATA3 7 DATA4 IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE TIMING WAVEFORMS - ASYNCHRONOUS MODE, MUX FUNCTION SYNC SEL OE Port A INV ALID DATA DATA1 t PLH , t PHL Port B INV ALID D ATA DATA2 t PLH , t PHL DATA3 t PLZ, t PHZ tASO Port Y INVALID D ATA DATA1 DATA2 DATA3 8 t PZL, tPZH DATA3 IDTQS34XS257 HIGH-SPEED CMOS SYNCHROSWITCH 32:16 MUX/DEMUX INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XXXXX Device Type XX Package X Process Blank Industrial (-40°C to +85°C) Q3 Q3G 150 mil MillipaQ 150 mil MillipaQ - Green 34XS257 High Speed CMOS SynchroSwitch 32:16 Mux/Demux CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 9 for Tech Support: [email protected]