PI3V331 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.3V, Low ON Resistance Wideband/ Video Dual 4-Channel Mux/Demux Product Features Product Description High-performance, low-cost solution to switch between video sources Wide bandwidth: 134 MHz Low ON-resistance: 8 Ohms Low crosstalk at 10 MHz: 90dB Ultra-low quiescent power (0.1µA typical) Single supply operation: +3.3V ±5% Fast switching: 5ns High-current output: 100mA Package: 16-pin 150-mil-wide plastic QSOP (Q16) Pericom Semiconductors PI3V series of mixed signal video circuits are produced using the Companys advanced CMOS low power technology achieving industry leading performance. The PI3V331 is a true bidirectional Dual 4-channel multiplexer/ demultiplexer that is recommended for both S-Video or composite video switching applications. The VideoSwitch can be driven from a current output RAMDAC or voltage output composite video source. Low ON-resistance and wide bandwidth make it ideal for video and other applications. Also this device has exceptionally high current capability which is far greater than most analog switches offered today. A single 3.3V supply is all that is required for operation. The PI3V331 offers a high-performance, low-cost solution to switch between video sources. Truth Table 16-Pin Product Configuration ENA ENB IN1 IN0 ON SWITCH 1 X X X Disable A ENA IN1 X 1 X X Disable B 0 0 0 0 S1A- DA, S1B- DB S3A 0 0 0 1 S2A- DA, S2B- DB S1A S4A 0 0 1 0 S3A- DA, S3B- DB 0 0 1 1 S4A- DA, S4B- DB S2A DA GND Functional Block Diagram Pin Name S1A, S2A S3A, S4A S1B, S2B S3B, S4B S0, S1 ENA, ENB DA, DB S2A DA S3A S4A S1B S2B DB S3B S4B GND VCC DECODER ENB 16 15 14 16-Pin W,Q 13 12 11 10 9 VCC ENB IN0 S4B S3B S2B S1B DB Product Pin Description S1A ENA 1 2 3 4 5 6 7 8 IN1 IN0 1 Description Analog Video I/O (Usually Inputs) Select Input Enable Analog Video I/O (Usually Outputs) Ground Power PS8509 12/12/00 PI3V331 3.3V, Low ON Resistance Wideband/ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Video Dual 4-Channel Mux/Demux 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 +4.6V Supply Voltage to Ground Potential (Outputs & D/O Only) 0.5V to +4.6V DC Input Voltage .................................................................. 0.5V to +4.6V DC Output Current ............................................................................. 120mA 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 = 3.3V ±5%) Parameters Description Test Conditions(1) VANALOG Analog Signal Range Min. Typ(2) Max. Units 0 2.0 V VIH Input HIGH Voltage Guaranteed Logic HIGH Level 2.0 V VIL Input LOW Voltage Guaranteed Logic LOW Level 0.5 0.8 V IIH Input HIGH Current VCC = Max., VIN = VCC ±1 µA IIL Input LOW Current VCC = Max., VIN = GND ±1 µA IO Analog Output Leakage Current 0 ≤S1, S2 or D ≤VCC, Switch Off ±1 µA VIK Clamp Diode Voltage VCC = Min., IIN = 18mA 0.8 V IOS Short Circuit Current(3) S1, S2, D = 0V VCC 100 mA VH Input Hysteresis at Control Pins 150 mV RON Switch On Resistance VCC = Min., VOUT = 0.975V RL = 75Ω, ION = 13mA 8 11 Ω VCC = MIN., VOUT = 1.95V RL = 75Ω, ION = 26mA 10 14 Ω (4) 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, TA = 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. Measured by the voltage drop between S1, S2, and D I/O pins at indicated current through the switch. ON resistance is determined by the lower of the voltages on the S1, S2, and D I/O pins. VOUT is the voltage across RL . 2 PS8509 12/12/00 PI3V331 3.3V, Low ON Resistance Wideband/ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Video Dual 4-Channel Mux/Demux 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Dynamic Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 3.3V ±5%) Parameter Description Test Conditions Min. Typ. Max. Units tON Turn On Time RL = 75Ω, CL = 20 pF, see Fig. 2 1.0 5 ns tOFF Turn Off Time RL = 75Ω, CL = 20 pF, see Fig. 2 1.0 5 ns BW 3 dB Bandwidth RL = 150Ω, see Fig. 3 134 MHz XTALK Crosstalk RIN = 10Ω; RL = 150Ω, 10 MHz, see Fig. 3 90 dB DG Differential Gain RL = 150Ω, f = 3.58 MHz, see Fig. 1 0.64 % Differential Phase RL = 150Ω, f = 3.58 MHz, see Fig. 1 0.27 Deg. CIN COFF(1) Input/Enable Capacitance Capacitance, Switch Off VIN = 0V, f = 1 MHz VIN = 0V, f = 1 MHz 3.0 8.0 pF pF CON(1) Capacitance, Switch On VIN = 0V, f = 1 MHz 36.0 pF OIRR Off Isolation RL = 150W, 10 MHz, see Fig. 3 50 dB Min. Typ(2) Max. Units (1) DP (1) Notes: 1. This parameter is determined by device characterization but is not production tested. Power Supply Characteristics Test Conditions(1) Parameters Description ICC Quiescent Power Supply Current VCC = Max. IN = GND or VCC 0.1 3.0 µA ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. IN = 3.4V(3) 750 µA ICCD Supply Current per Input per MHz(4) VCC = Max., S1, S2, and D Pins Open EN = GND Control Input Toggling 50% Duty Cycle 0.25 mA/ MHz Notes: 1. For Max. or Min. conditions, 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, control inputs only); S1, S2, and D pins do not contribute to ICC. 4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The S1, S2, and D I/O pins generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design. 3 PS8509 12/12/00 PI3V331 3.3V, Low ON Resistance Wideband/ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Video Dual 4-Channel Mux/Demux 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Applications LAN Switch VCC Bias Voltage vs. RON To keep RON to a minimum, it is recommended that the VCC voltage be increased to a voltage between 3.3V and 3.6V. Ideally an input voltage between 0.2V and 3.6V will keep RON flat. The PI3V331 was designed to switch between various standards such as 10Base-T, 100Base-T, 100VG-AnyLAN, and Token Ring. Also general purpose applications such as loopback, line termination, and line clamps that might normally use mechanical relays are also ideal uses for this LAN Switch (see Figure 1). Generally speaking, this LAN Switch can be used for data rates to 200 Mbps and data signal levels from 0V to 3.6V. LAN Standards Data Rate per twisted pair (UTP) 10Base-T 10 Mbps 100Base-T 100 Mbps 100VG-AnyLAN 25 Mbps Signal Distortion Distortion of the input signal is equated to 20LOG ∆RON/RL . So keeping RON flat as the data signal level varies is critical to low distortion. Notice that increasing the data rate increases harmonic distortion which also effects the signal amplitude. Definitions Symbol Description RON Resistance between source and drain with switch in the ON state. IO Output leakage current measured at S1, S2, and D with the switch OFF. VIN Digital voltage at the IN pin that selects between S1 and S2 analog inputs. VEN A voltage that ENABLES the chip. CIN Capacitance at the digital inputs. COFF Capacitance at analog I/O (S1, S2, D) with switch OFF. CON Capacitance at analog I/O (S1, S2, D) with switch ON. VIH Minimum input voltage for logic HIGH. VIL Minimum input voltage for logic LOW. IIH (IIL) Input current of the digital input. IOS Minimum short circuit current for S1, S2 and D. tON Propagation delay measured between 50% of the digital input to 90% of the analog output when switch is turned ON. The peak analog voltage is 0.714V. tOFF Propagation delay measured between 50% of the digital input to 90% of the analog output when switch is turned OFF. The peak analog voltage is 0.714V. BW Frequency response of the switch in the ON state measured at 3dB down. XTALK Is an unwanted signal coupled from channel to channel. Measured in dB. XTALK = 20 LOG VOUT/VIN. This is non-adjacent crosstalk. DG Differential gain is the difference measurement between two bias levels, for instance analog input signals of 0V to 0.714V. DP Differential phase is the difference measurement between two bias levels, for instance analog input signals of 0V to 0.714V. OIRR Off isolation is the resistance (measured in dB) between the input and output with the switch off (NO). 4 PS8509 12/12/00 PI3V331 3.3V, Low ON Resistance Wideband/ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Video Dual 4-Channel Mux/Demux 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Test Circuits DC HP4195A S1 R1 T2 0.1µF HP41800A HP41952A 0.1µF PI3V331 150Ω HP11667A Figure 1. Differential Gain/Phase 5.0V Digital Input Vcc S 3V D 50% VOUT 75Ω IN 50% Analog Output 20pF PI3V331 GND EN 90% tON 90% tOFF Figure 2. Switching Time HP4195A S1 R1 T1 HP11667A PI3V331 100Ω Figure 3. Gain/Phase, Crosstalk, Off-Isolation 5 PS8509 12/12/00 PI3V331 3.3V, Low ON Resistance Wideband/ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Video Dual 4-Channel Mux/Demux 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 16-pin 150-mil-wide plastic QSOP (Q) 16 .150 .157 3.81 3.99 .015 x 45° 0.38 1 .007 .010 .189 .197 4.80 5.00 0.178 0.254 0.41 .016 1.27 .050 .008 0.203 REF .228 .244 5.79 6.19 .053 1.35 .069 1.75 SEATING PLANE .008 .012 0.203 0.305 .025 BSC 0.635 .004 0.101 .010 0.254 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Ordering Information Part Pin Package Te mpe rature PI3V331Q 16 Q SO P (Q ) 40°C to +85°C Pericom Semiconductor Corporation 2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com 6 PS8509 12/12/00