PI74FCT157T PERICOM | Alldatasheet

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Technical content

1 PS2010A 03/09/96

1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI74FCT157T/257T (25WWWWW Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER Product Description: Pericom Semiconductor’s PI74FCT series of logic circuits are pro- duced in the Company’s advanced 0.8 micron CMOS technology, achieving industry leading speed grades. All PI74FCT2XXX devices have a built-in 25-ohm series resistor on all outputs to reduce noise because of reflections, thus eliminating the need for an external terminating resistor. The PI74FCT157T/257T and PI74FCT2157T/2257T are high- speed quad 2-input multiplexers. The common select input can be used to select four bits of data from two sources. The four buffered outputs present the selected data in the true (non-inverting) form. The PI74FCT157T/2157T has a common, active-LOW, Enable input (E). When E is inactive, all four outputs are held LOW. The PI74FCT157T/2157T can generate any four of the 16 different funtions of two variables with one common variable. The PI74FCT157T/2157T can be used as a function generator or to move data from two different groups of registers to a common bus. The PI74FCT257/2257T has a common Output Enable (OE) input. When OE is HIGH, all outputs are switched to a high-impedance state allowing the outputs to interface directly with bus-oriented systems. Logic Block Diagram 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI74FCT157T/257T (25WWWWW Series)PI74FCT2157T/2257T Fast CMOS Quad 2-Input Multiplexer Product Features:

  • PI74FCT157/257/2157/2257T is pin compatible with bipolar FAST™ Series at a higher speed and lower power consumption
  • 2 5 W series resistor on all outputs (FCT2XXX only)
  • TTL input and output levels
  • Low ground bounce outputs (25W series only)
  • Extremely low static power
  • Hysteresis on all inputs
  • Industrial operating temperature range: –40°C to +85°C
  • Packages available: – 16-pin 150 mil wide plastic QSOP (Q) – 16-pin 300 mil wide plastic SOIC (S) – 16-pin 150 mil wide plastic SOIC (W) 157 ONLY S I1B-I1D I0B-I0D E I1A I0A 257 ONLY OE ZB-ZD ZA

3 OTHER MULTIPLEXERS

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI74FCT157T/257T (25WWWWW Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER PI74FCT157/2157T Product Pin Configuration PI74FCT257/2257T Product Pin Configuration Inputs Outputs Z N E/OE S I 0 I1 157/2157 257/2257 HX X X L Z LH X L L L LH X H H H LL L X L L LL H X H H Truth Table(1) NOTE: 1. H = High Voltage Level X = Don't Care L = Low Voltage Level Z = High Impedance Product Pin Description Pin Name Description I0A-I0D Source 0 Data Inputs I1A-I1D Source 1 Data Inputs E Enable Input (Active LOW) FCT157/2157 OE Output Enable (Active LOW) FCT257/2257 S Select Input ZA -ZD Outputs GND Ground V CC Power S I0A I1A ZA I0B I1B ZB GND Vcc E I I1C ZC I0D I1D ZD 16-PIN Q16 S16 W16 S I0A I1A ZA I0B I1B ZB GND Vcc OE I I1C ZC I0D I1D ZD 16-PIN Q16 S16 W16

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI74FCT157T/257T (25WWWWW Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Note: Stresses greater than those listed under 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. Parameters Description Test Conditions (1) Min. Typ (2) Max. Units V OH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –15.0 mA 2.4 3.0 V V OL Output LOW Current V CC = Min., VIN = VIH or VIL IOL = 48 mA 0.3 0.50 V V OL Output LOW Current V CC = Min., VIN = VIH or VIL IOL = 12 mA (25W Series) 0.3 0.50 V V IH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V V IL Input LOW Voltage Guaranteed Logic LOW Level 0.8 V IIH Input HIGH Current V CC = Max. V IN = VCC 1µ A IIL Input LOW Current V CC = Max. V IN = GND –1 µA IOZH High Impedance V CC = MAX .V OUT = 2.7V 1 µA IOZL Output Current V OUT = 0.5V –1 µA V IK Clamp Diode Voltage V CC = Min., IIN = –18 mA –0.7 –1.2 V IOFF Power Down Disable V CC = GND, VOUT = 4.5V — — 100 µA IOS Short Circuit Current VCC = Max.(3), VOUT = GND –60 –120 mA VH Input Hysteresis 200 m V Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) Description Test Conditions Typ Max. Units C IN Input Capacitance V IN = 0V 6 10 pF C OUT Output Capacitance V OUT = 0V 8 12 pF Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at Vcc = 5.0V, +25°C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is determined by device characterization but is not production tested.

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI74FCT157T/257T (25WWWWW Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER Notes: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at Vcc = 5.0V, +25°C ambient. 3. Per TTL driven input (V IN = 3.4V); 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. I C =IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + DICC DH N T + ICCD (fCP /2 + fIN I) ICC = Quiescent Current DICC = Power Supply Current for a TTL High Input (VIN = 3.4V) D H = Duty Cycle for TTL Inputs High N T = 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) fI = Input Frequency N I = Number of Inputs at fI All currents are in milliamps and all frequencies are in megahertz. Power Supply Characteristics Parameters Description Test Conditions (1) Min. Typ (2) Max. Units ICC Quiescent Power V CC = Max. V IN = GND or VCC 0.1 500 µA Supply Current DICC Supply Current per V CC = Max. V IN = 3.4V(3) 0.5 2.5 mA Input @ TTL HIGH ICCD Supply Current per V CC = Max., V IN = VCC 0.15 0.25 mA/ Input per MHz(4) Outputs Open V IN = GND MHz E or OE = GND One Bit Toggling 50% Duty Cycle IC Total Power Supply V CC = Max., V IN = VCC 1.5 3.5 (5) mA Current(6) Outputs Open V IN = GND fI = 10 MHZ 50% Duty Cycle V IN = 3.4V 1.8 4.5 (5) E or OE = GND V IN = GND One Bit Toggling V CC = Max., V IN = VCC 1.5 3.5 (5) Outputs Open V IN = GND fI = 2.5 MHZ 50% Duty Cycle V IN = 3.4V 2.5 7.5 (5) E or OE = GND V IN = GND Four Bits Toggling

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1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PI74FCT157T/257T (25WWWWW Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER PI74FCT257/2257T Switching Characteristics over Operating Range 257T/2257T 257AT/2257AT 257CT/2257CT Com. Com. Com. Parameters Description Conditions (1) Min Max Min Max Min Max Unit tPHL IN to ZN R L = 500W tPHL S to ZN tPZL OE to ZN tPZL OE to ZN PI74FCT157/2157T Switching Characteristics over Operating Range 157T/2157T 157AT/2157AT 157CT/2157CT 157DT Com. Com. Com. Com. Parameters Description Conditions (1) Min Max Min Max Min Max Min Max Unit tPHL IN to ZN R L = 500W tPHL E to ZN tPHL S to ZN Notes: 1. See test circuit and wave forms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. This parameter guaranteed but not production tested. Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com