PI74FCT157T/257T (25Ω Ω Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT157T/257T Ω Series)PI74FCT2157T/2257T (25Ω 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS Quad 2-Input Multiplexer Product Features: Product Description: • PI74FCT157/257/2157/2257T is pin compatible with bipolar FAST™ Series at a higher speed and lower power consumption • 25Ω series resistor on all outputs (FCT2XXX only) • TTL input and output levels • Low ground bounce outputs (25Ω 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) Pericom Semiconductor’s PI74FCT series of logic circuits are produced 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 highspeed 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 S 157 ONLY 3 OTHER MULTIPLEXERS E I1B-I1D ZB-ZD I0B-I0D I1A ZA I0A 257 ONLY OE 1 PS2010A 03/09/96 PI74FCT157T/257T (25Ω Ω Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Truth Table(1) Product Pin Description Pin Name I0A-I0D I1A-I1D E OE S ZA-ZD GND VCC Inputs Description Source 0 Data Inputs Source 1 Data Inputs Enable Input (Active LOW) FCT157/2157 Output Enable (Active LOW) FCT257/2257 Select Input Outputs Ground Power E/OE H L L L L S X H H L L I0 X X X L H I1 X L H X X Outputs ZN 157/2157 257/2257 L Z L L H H L L H H NOTE: 1. H = High Voltage Level X = Don't Care L = Low Voltage Level Z = High Impedance PI74FCT157/2157T Product Pin Configuration S I0A I1A ZA I 0B I1B ZB GND 1 16 2 15 3 16-PIN 14 Q16 13 4 S16 12 5 W16 6 11 7 10 8 9 Vcc E I0C I1C ZC I 0D I1D ZD PI74FCT257/2257T Product Pin Configuration S I0A I1A ZA I0B I1B ZB GND 1 2 3 4 5 6 7 8 16 15 16-PIN 14 Q16 13 S16 12 W16 11 10 9 Vcc OE I0C I1C ZC I 0D I1D ZD 2 PS2010A 03/09/96 PI74FCT157T/257T (25Ω Ω Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................................................. –65°C to +150°C Ambient Temperature with Power Applied ................................. -40°C to +85°C Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... –0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ....... –0.5V to +7.0V DC Input Voltage ......................................................................... –0.5V to +7.0V DC Output Current ................................................................................... 120 mA Power Dissipation ......................................................................................... 0.5W 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. DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5.0V ± 5%) Parameters Description Test Conditions(1) Min. Typ(2) Max. Units VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –15.0 mA 2.4 3.0 V VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 48 mA 0.3 0.50 V VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 12 mA (25Ω Series) 0.3 0.50 V VIH Input HIGH Voltage Guaranteed Logic HIGH Level VIL Input LOW Voltage Guaranteed Logic LOW Level IIH Input HIGH Current VCC = Max. IIL Input LOW Current IOZH High Impedance IOZL Output Current VIK Clamp Diode Voltage VCC = Min., IIN = –18 mA IOFF Power Down Disable VCC = GND, VOUT = 4.5V IOS Short Circuit Current VCC = Max.(3), VOUT = GND VH Input Hysteresis 2.0 V 0.8 V VIN = VCC 1 µA VCC = Max. VIN = GND –1 µA VCC = MAX. VOUT = 2.7V 1 µA VOUT = 0.5V –1 µA –0.7 –1.2 V — — 100 µA –60 –120 mA 200 mV Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) Description Test Conditions Typ Max. Units CIN Input Capacitance VIN = 0V 6 10 pF COUT Output Capacitance VOUT = 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. 3 PS2010A 03/09/96 PI74FCT157T/257T (25Ω Ω Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ(2) Max. Units ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC 0.1 500 µA ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) 0.5 2.5 mA ICCD Supply Current per Input per MHz(4) VCC = Max., Outputs Open E or OE = GND One Bit Toggling 50% Duty Cycle VIN = VCC VIN = GND 0.15 0.25 mA/ MHz IC Total Power Supply Current(6) VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle E or OE = GND One Bit Toggling VIN = VCC VIN = GND 1.5 3.5(5) mA VIN = 3.4V VIN = GND 1.8 4.5(5) VIN = VCC VIN = GND 1.5 3.5(5) VIN = 3.4V VIN = GND 2.5 7.5(5) VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle E or OE = GND Four Bits Toggling 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 (VIN = 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. 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 Input Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fI = Input Frequency NI = Number of Inputs at fI All currents are in milliamps and all frequencies are in megahertz. 4 PS2010A 03/09/96 PI74FCT157T/257T (25Ω Ω Series)PI74FCT2157T/2257T QUAD 2-INPUT MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT157/2157T Switching Characteristics over Operating Range Parameters tPLH tPHL tPLH tPHL tPLH tPHL Description Conditions(1) Propagation Delay IN to ZN Propagation Delay E to ZN Propagation Delay S to ZN CL = 50 pF RL = 500Ω 157T/2157T Com. Min Max 157AT/2157AT 157CT/2157CT Com. Com. Min Max Min Max 157DT Com. Min Max Unit 1.5 6.0 1.5 5.0 1.5 4.3 1.5 3.9 ns 1.5 10.5 1.5 6.0 1.5 4.8 1.5 4.4 ns 1.5 10.5 1.5 7.0 1.5 5.2 1.5 4.6 ns PI74FCT257/2257T Switching Characteristics over Operating Range Parameters tPLH tPHL tPLH tPHL tPZH tPZL tPZH tPZL Description Conditions(1) Propagation Delay IN to ZN Propagation Delay S to ZN Output Enable Time OE to ZN Output Disable Time(3) OE to ZN CL = 50 pF RL = 500Ω 257T/2257T Com. Min Max 257AT/2257AT 257CT/2257CT Com. Com. Min Max Min Max Unit 1.5 6.0 1.5 5.0 1.5 4.3 ns 1.5 10.5 1.5 7.0 1.5 5.2 ns 1.5 8.5 1.5 7.0 1.5 6.0 ns 1.5 6.0 1.5 5.5 1.5 5.0 ns 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 5 PS2010A 03/09/96