Revised November 2002 FSTD16211 24-Bit Bus Switch with Level Shifting General Description Features The Fairchild Switch FSTD16211 provides 24-bits of highspeed CMOS TTL-compatible bus switching. The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise. A diode to VCC has been integrated into the circuit to allow for level shifting between 5V inputs and 3.3V outputs. ■ 4Ω switch connection between two ports The device is organized as a 12-bit or 24-bit bus switch. When OE1 is LOW, the switch is ON and Port 1A is connected to Port 1B. When OE2 is LOW, Port 2A is connected to Port 2B. When OE1/2 is HIGH, a high impedance state exists between the A and B Ports. ■ Also packaged in plastic Fine-Pitch Ball Grid Array (FBGA) ■ Voltage level shifting ■ Minimal propagation delay through the switch ■ Low lCC ■ Zero bounce in flow-through mode ■ Control inputs compatible with TTL level Ordering Code: Order Number Package Number Package Description FSTD16211G (Note 1)(Note 2) BGA54A 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide [TAPE and REEL] FSTD16211MTD (Note 2) MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Note 1: Ordering code “G” indicates Trays. Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Diagram © 2002 Fairchild Semiconductor Corporation DS500313 www.fairchildsemi.com FSTD16211 24-Bit Bus Switch with Level Shifting June 2000 FSTD16211 Connection Diagrams Pin Descriptions Pin Assignment for TSSOP Pin Name Description OE1, OE2 Bus Switch Enables 1A, 2A Bus A 1B, 2B Bus B NC No Connect Pin Assignment for FBGA 1 2 3 4 5 6 A 1A2 1A1 NC OE2 1B1 1B2 B 1A4 1A3 1A7 OE1 1B3 1B4 C 1A6 1A5 GND 1B7 1B5 1B6 D 1A10 1A9 1A8 1B8 1B9 1B10 E 1A12 1A11 2A1 2B1 1B11 1B12 F 2A4 2A3 2A2 2B2 2B3 2B4 G 2A6 2A5 VCC GND 2B5 2B6 H 2A8 2A7 2A9 2B9 2B7 2B8 J 2A12 2A11 2A10 2B10 2B11 2B12 Truth Table Inputs Pin Assignment for FBGA (Top Thru View) www.fairchildsemi.com 2 Inputs/Outputs OE1 OE2 1A, 1B 2A, 2B L L 1A = 1B 2A = 2B L H 1A = 1B Z H L Z 2A = 2B H H Z Z Recommended Operating Conditions (Note 6) Supply Voltage (VCC) −0.5V to +7.0V DC Switch Voltage (VS) (Note 4) −0.5V to +7.0V Power Supply Operating (VCC) DC Input Control Pin Voltage (VIN)(Note 5) −0.5V to +7.0V Input Voltage (VIN) 0V to 5.5V 0V to 5.5V DC Input Diode Current (lIK) VIN < 0V −50 mA Output Voltage (VOUT) DC Output (IOUT) 128 mA Input Rise and Fall Time (tr, tf) +/− 100 mA DC VCC/GND Current (ICC/IGND) Storage Temperature Range (TSTG) 4.5V to 5.5V Switch Control Input −65°C to +150 °C 0 ns/V to 5 ns/V Switch I/O 0 ns/V to DC -40 °C to +85 °C Free Air Operating Temperature (TA) Note 3: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum rating. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 4: VS is the voltage observed/applied at either A or B Ports across the switch. Note 5: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. Note 6: Unused control inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics VCC Symbol Parameter (V) VIK Clamp Diode Voltage VIH HIGH Level Input Voltage 4.5–5.5 VIL LOW Level Input Voltage 4.5–5.5 VOH HIGH Level 4.5–5.5 II Input Leakage Current TA = −40 °C to +85 °C Min Typ (Note 7) Max −1.2 4.5 2.0 Units V Conditions IIN = −18 mA V 0.8 V 5.5 ±1.0 µA 0 ≤ VIN ≤ 5.5V 0 10 µA VIN = 5.5V ±1.0 µA 0 ≤ A, B ≤ VCC See Figure 3 V IOZ OFF-STATE Leakage Current 5.5 RON Switch On Resistance 4.5 4 7 Ω VIN = 0V, IIN = 64 mA (Note 8) 4.5 4 7 Ω VIN = 0V, IIN = 30 mA 4.5 35 50 Ω VIN = 2.4V, IIN = 15 mA 1.5 mA ICC Quiescent Supply Current 5.5 OE1 = OE2 = GND VIN = VCC or GND, IOUT = 0 10 µA OE1 = OE2 = VCC 2.5 mA One Input at 3.4V VIN = VCC or GND, IOUT = 0 ∆ ICC Increase in ICC per Input 5.5 Other Inputs at VCC or GND Note 7: Typical values are at VCC = 5.0V and TA= +25°C Note 8: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the voltages on the two (A or B) pins. 3 www.fairchildsemi.com FSTD16211 Absolute Maximum Ratings(Note 3) FSTD16211 AC Electrical Characteristics TA = −40 °C to +85 °C, Symbol Parameter CL = 50pF, RU = RD = 500Ω Min tPHL, tPLH Propagation Delay Bus to Bus (Note 9) tPZH, tPZL Output Enable Time Units VCC = 4.5 – 5.5V Figure Conditions Number Max 0.25 ns VI = OPEN Figures 1, 2 5.5 ns VI = 7V for tPZL Figures 1, 2 1.5 VI = OPEN for tPZH tPHZ, tPLZ Output Disable Time 1.5 6.5 ns VI = 7V for tPLZ Figures 1, 2 VI = OPEN for tPHZ Note 9: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On Resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage source (zero output impedance). Capacitance Symbol (Note 10) Parameter Typ Max Units Conditions CIN Control Pin Input Capacitance 3.5 pF VCC = 5.0V CI/O Input/Output Capacitance 5.5 pF VCC, OE = 5.0V Note 10: TA = +25°C, f = 1 MHz, Capacitance is characterized but not tested. AC Loading and Waveforms Note: Input driven by 50Ω source terminated in 50Ω Note: CL includes load and stray capacitance Note: Input PRR = 1.0 MHz, tW = 500 ns FIGURE 1. AC Test Circuit FIGURE 2. AC Waveforms www.fairchildsemi.com 4 FSTD16211 Output Voltage HIGH vs. Supply Voltage FIGURE 3. 5 www.fairchildsemi.com FSTD16211 Physical Dimensions inches (millimeters) unless otherwise noted 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide Package Number BGA54A www.fairchildsemi.com 6 FSTD16211 24-Bit Bus Switch with Level Shifting Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD56 Technology Description The Fairchild Switch family derives from and embodies Fairchild’s proven switch technology used for several years in its 74LVX3L384 (FST3384) bus switch product. Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 7 www.fairchildsemi.com