|
If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
Datasheet File OCR Text: |
IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER FEATURES: * * * * * * IDTQS74FCT2157AT/CT DESCRIPTION: CMOS power levels: <7.5mW static Undershoot clamp diodes on all inputs True TTL input and output compatibility Ground bounce controlled outputs Reduced output swing of 0 to 3.5V Built-in 25 series resistor outputs reduce reflection and other system noise * A and C speed grades with 4.3ns for C * IOL = 12mA * Available in SOIC, QSOP, and S1 packages The IDTQS74FCT2157T is a high-speed CMOS TTL-compatible, quad, 2-input multiplexer with a 25 resistor output, useful for driving transmission lines and reducing system noise. All inputs have clamp diodes for undershoot noise suppression. All outputs have ground bounce suppression. Outputs will not load an active bus when Vcc is removed from the device. FUNCTIONAL BLOCK DIAGRAM E 15 S 1 I0A 2 I1A 3 I0B 5 I1B 6 I0C 11 I1C 10 I0D 14 I1D 13 25 4 7 25 9 25 12 25 YA The IDT logo is a registered trademark of Integrated Device Technology, Inc. YB YC YD INDUSTRIAL TEMPERATURE RANGE 1 JANUARY 2001 DSC-5401/3 (c) 2001 Integrated Device Technology, Inc. IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS(1) Symbol VTERM TSTG Description Terminal Voltage with Respect to GND Storage Temperature DC Output Current Max Current Sink/Pin Input Diode Current, VIN < 0 DC Output Current, VOUT < 0 Max -0.5 to +7 -65 to +150 +120 -20 -50 Unit V C mA mA mA S I0A I1A YA I0B I1B YB GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC E I0D I1D YD I0C I1C YC IOUT IIK IOK 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. CAPACITANCE (TA = +25C, F = 1.0MHz) Symbol CIN COUT Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 4 8 Max. -- -- Unit pF pF NOTE: 1. This parameter is measured at characterization but not tested. SOIC/ QSOP/ S1 TOP VIEW PIN DESCRIPTION Pin Names Ixx E S Yxx Description Data Inputs Enable Input (Active LOW) Select Input Outputs FUNCTION TABLE(1) E H L L S X L H Inputs YA YB L L 10A 10B 11B 11A YC L 10C 11C YD L 10D 11D Function Disable Select 0 Select 1 NOTE: 1. H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level 2 IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Industrial: TA = -40C to +85C, VCC = 5.0V 5% Symbol VIH VIL VT IIH IIL IOR VIC VOH VOL ROUT Parameter Input HIGH Level Input LOW Level Input Hysteresis Input HIGH Current Input LOW Current Current Drive Input Clamp Voltage Output HIGH Voltage Output LOW Voltage Output Resistance VCC = Max., VOUT = GND(2) VCC = Min., IIN = -18mA, TA = VCC = Min. VCC = Min. VCC = Min. 25C(2) IOH = -15mA IOL = 12mA IOH = 12mA 50 -- 2.4 -- 20 -- -0.7 -- -- 28 -- -1.2 -- 0.5 40 mA V V V Test Conditions Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VTLH - VTHL for all inputs VCC = Max. 0 VIN VCC Min. 2 -- -- -- Typ.(1) -- -- 0.2 -- Max. -- 0.8 -- 5 Unit V V V A NOTES: 1. Typical values are at VCC = 5.0V, +25C ambient. 2. This parameter is guaranteed but not tested. POWER SUPPLY CHARACTERISTICS Symbol ICC Parameter Quiescent Power Supply Current Test Conditions(1) VCC = Max. freq = 0 0V VIN 0.2V or VCC - 0.2V VIN VCC ICC Supply Current per Input TTL Inputs HIGH VCC = Max. VIN = 3.4V(2) freq = 0 VCC = Max. Outputs Open and Enabled One Bit Toggling 50% Duty Cycle Other inputs at GND or VCC(3,4) NOTES: 1. For conditions shown as Min. or Max., use appropriate value specified under DC Electrical Characteristics. 2. Per TTL driven input (VIN = 3.4V). 3. For flip-flops, ICCD is measured by switching one of the data input pins so that the output changes every clock cycle. This is a measurement of device power consumption only and does not include power to drive load capacitance or tester capacitance. 4. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fCP/2 + fiNi) 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 Output Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fi = Output Frequency Ni = Number of Outputs at fi All currents are in milliamps and all frequencies are in megahertz. Min. -- Max. 1.5 Unit mA -- 2 mA ICCD Supply Current per Input per MHz -- 0.25 mA/ MHz 3 IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE(1) 74FCT2157AT Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter Propagation Delay Ixx to Yx Propagation Delay Sx to Yx Propagation Delay E to Yx Min. 1.5 1.5 1.5 Max. 5 7 6 Min. 1.5 1.5 1.5 74FCT2157CT Max. 4.3 5.2 4.8 Unit ns ns ns NOTE: 1. CLOAD = 50pF, RLOAD = 500 unless otherwise noted. 4 IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS VCC 500 VIN Pulse G enerator D.U.T. 50pF RT 500 CL VOUT 7.0V SWITCH POSITION Test Open Drain Disable Low Enable Low All Other Tests Switch Closed Open DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. FCTL link Test Circuits for All Outputs DATA INPUT tSU TIMING INPUT ASYNCHRO NOUS CONTROL PRESET CLEAR ETC. SYNCHRON OUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tREM tH 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V 3V 1.5V 0V FCTL link LOW -HIGH-LOW PULSE tW HIG H-LOW -HIGH PULSE FCTL link 1.5V 1.5V tSU tH Pulse Width Set-Up, Hold, and Release Times ENABLE SAM E PHASE INPUT TRANSITIO N tPLH O UTPUT tPLH OPPOSITE PHASE INPUT TRANSITIO N tPHL tPHL 3V 1.5V 0V VOH 1.5V VOL 3V 1.5V 0V FCTL link DISABLE 3V CONTRO L INPUT tPZL OUTPUT NO RMALLY LOW SW ITCH CLOSED tPZH OUTPUT NO RMALLY HIGH SW ITCH OPEN 3.5V 1.5V 0.3V tPHZ 0.3V 1.5V 0V tPLZ 1.5V 0V 3.5V VOL VOH 0V FCTL link Propagation Delay 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. 5 IDTQS74FCT2157AT/CT HIGH-SPEED CMOS QUAD 2-INPUT MULTIPLEXER INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDTQS XX XX FCT XXXX Device Type Package Temp. Range SO Q S1 Small Outline IC (gull wing) Quarter Size Small Outline Package Small Outline IC (gull wing) 2157AT 2157CT High-Speed CMOS Quad 2-Input Multiplexer 74 -40C to +85C 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 for Tech Support: logichelp@idt.com (408) 654-6459 6 |
Price & Availability of IDTQS74FCT2157CT |
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
[Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |