Ω Series 25Ω PI74FCT3X2257T 24:12 MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 25Ω Ω Series PI74FCT3X2257T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 24:12 Multiplexer Features Product Description Ideal for digital video switching 25Ω series resistor on all outputs TTL input and output levels Low ground bounce outputs Extremely low static power Hysteresis on all inputs Industrial operating temperature range: 40°C to +85°C Package: 48-pin BQSOP (B48) Pericom Semiconductors PI74FCT series of logic circuits are produced in the Companys advanced 0.8 micron CMOS technology, achieving industry leading speed grades. All PI74FCT3X2257T 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 PI74FCT3X2257T is a buffered 24:12 or twelve 2:1 multiplexers that is ideal for switching and buffering 8-bit or 12-bit YCbCr video data. Product Pin Description Logic Block Diagram Pin Name I0A-I0L I1A-I1L OE1 - OE3 S1- S3 ZA-ZL GND VCC S1 3 OTHER MULTIPLEXERS I1B − I1D ZB − ZD I0B − I0D I1 A ZA Description Source 0 Data Inputs Source 1 Data Inputs Output Enable (Active LOW) FCT3X2257 Select Input Outputs Ground Power I0A Truth Table(1) OE1 Inputs S2 OE H L L L L 3 OTHER MULTIPLEXERS I1F − I1H ZF − ZH I0F − I0H I1 E ZE I0E S X H H L L I0 X X X L H I1 X L H X X Output ZN 2257 Z L H L H Note: 1. H = High Voltage Level OE2 S3 3 OTHER MULTIPLEXERS I1J − I1L ZJ − ZL I0J − I0L I 1I ZI I0I OE3 1 PS8119 05/06/97 Ω Series 25Ω PI74FCT3X2257T 24:12 MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT3X2257T Product Pin Configuration S1 1 48 Vcc I0A 2 47 OE1 I1A 3 46 I0C ZA 4 45 I1C I0B 5 44 ZC I1B 6 43 I0D ZB 7 42 I1D GND 8 41 ZD S2 9 40 Vcc I0E 10 39 OE2 I1E 11 38 I0G 37 I1G 48-PIN BQSOP ZE 12 I0F 13 36 ZG I1F 14 35 I0H ZF 15 34 I1H GND 16 33 ZH S3 17 32 Vcc I0I 18 31 OE3 I1I 19 30 I0K ZI 20 29 I1K I0J 21 28 ZK I0J 22 27 I0L ZJ 23 26 I1L GND 24 25 ZL 2 PS8119 05/06/97 Ω Series 25Ω PI74FCT3X2257T 24:12 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 VOL Output LOW Current VCC = Min., VIN = VIH or VIL IOL = 12 mA (25Ω Series) 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 (3) VH Input Hysteresis 3.0 0.3 V 0.50 2.0 V 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 VCC = Max. , VOUT = GND 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 PS8119 05/06/97 Ω Series 25Ω PI74FCT3X2257T 24:12 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 PS8119 05/06/97 Ω Series 25Ω PI74FCT3X2257T 24:12 MULTIPLEXER 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 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 = 500W 2257T Com. Min Max 2257AT Com. Min Max 1.5 6.0 1.5 5.0 ns 1.5 10.5 1.5 7.0 ns 1.5 8.5 1.5 7.0 ns 1.5 6.0 1.5 5.5 ns Unit 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 PS8119 05/06/97