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| 74VCXH16244 Low Voltage 16-Bit Buffer/Line Driver with Bushold November 1999 Revised March 2000 74VCXH16244 Low Voltage 16-Bit Buffer/Line Driver with Bushold General Description The VCXH16244 contains sixteen non-inverting buffers with 3-STATE outputs to be employed as a memory and address driver, clock driver, or bus oriented transmitter/ receiver. The device is nibble (4-bit) controlled. Each nibble has separate 3-STATE control inputs which can be shorted together for full 16-bit operation. The VCXH16244 data inputs include active bushold circuitry, eliminating the need for external pull-up resistors to hold unused or floating data inputs at a valid logic level. The 74VCXH16244 is designed for low voltage (1.65V to 3.6V) VCC applications with output capability up to 3.6V. The 74VCXH16244 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation. Features s 1.65V-3.6V VCC supply operation s 3.6V tolerant control inputs and outputs s Bushold on data inputs eliminating the need for external pull-up/pull-down resistors s tPD 2.5 ns max for 3.0V to 3.6V VCC 3.0 ns max for 2.3V to 2.7V VCC 6.0 ns max for 1.65V to 1.95V VCC s Static Drive (IOH/IOL) 24 mA @ 3.0V VCC 18 mA @ 2.3V VCC 6 mA @ 1.65V VCC s Uses patented noise/EMI reduction circuitry s Latch-up performance exceeds 300 mA s ESD performance: Human body model > 2000V Machine model > 200V Ordering Code: Order Number 74VCXH16244MTD Package Number MTD48 Package Description 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Logic Symbol Pin Descriptions Pin Names OEn I0-I15 O0-O15 Description Output Enable Input (Active LOW) Bushold Inputs Outputs (c) 2000 Fairchild Semiconductor Corporation DS500230 www.fairchildsemi.com 74VCXH16244 Connection Diagram Truth Tables Inputs OE1 L L H Inputs OE3 L L H Inputs OE2 L L H Inputs OE4 L L H I12-I15 L H X I4-I7 L H X I8-I11 L H X I0-I3 L H X Outputs O0-O3 L H Z Outputs O8-O11 L H Z Outputs O4-O7 L H Z Outputs O12-O15 L H Z H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial (HIGH or LOW, inputs may not float) Z = High Impedance Functional Description The 74VCXH16244 contains sixteen non-inverting buffers with 3-STATE outputs. The device is nibble (4 bits) controlled with each nibble functioning identically, but independent of each other. The control pins may be shorted together to obtain full 16-bit operation.The 3-STATE outputs are controlled by an Output Enable (OEn) input. When OEn is LOW, the outputs are in the 2-state mode. When OEn is HIGH, the standard outputs are in the high impedance mode but this does not interfere with entering new data into the inputs. Logic Diagram www.fairchildsemi.com 2 74VCXH16244 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) DC Input Voltage (VI) OEn I0 - I15 Output Voltage (VO) Outputs 3-STATED Outputs Active (Note 2) DC Input Diode Current (IIK) VI < 0V DC Output Diode Current (IOK) VO < 0V VO > VCC DC Output Source/Sink Current (IOH/IOL) DC VCC or GND Current per Supply Pin (ICC or GND) Storage Temperature Range (TSTG) 100 mA -65C to +150C 50 mA -50 mA +50 mA -50 mA -0.5V to +4.6V -0.5V to VCC +0.5V -0.5V to 4.6V -0.5V to VCC + 0.5V -0.5V to +4.6V Recommended Operating Conditions (Note 3) Power Supply Operating Data Retention Only Input Voltage Output Voltage (VO) Output in Active States Output in 3-STATE Output Current in IOH/IOL VCC = 3.0V to 3.6V VCC = 2.3V to 2.7V VCC = 1.65V to 2.3V Free Air Operating Temperature (TA) Minimum Input Edge Rate (t/V) VIN = 0.8V to 2.0V, VCC = 3.0V 10 ns/V Note 1: 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 Ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 2: IO Absolute Maximum Rating must be observed. Note 3: Floating or unused control inputs must be held HIGH or LOW. 1.65V to 3.6V 1.2V to 3.6V -0.3V to VCC 0V to VCC 0.0V to 3.6V 24 mA 18 mA 6 mA -40C to +85C DC Electrical Characteristics (2.7V < VCC 3.6V) Symbol VIH VIL VOH Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage IOH = -100 A IOH = -12 mA IOH = -18 mA IOH = -24 mA VOL LOW Level Output Voltage IOL = 100 A IOL = 12 mA IOL = 18 mA IOL = 24 mA II II(HOLD) II(OD) IOZ IOFF ICC ICC Input Leakage Current Bushold Input Minimum Drive Hold Current Bushold Input Over-Drive Current to Change State 3-STATE Output Leakage Power-OFF Leakage Current Quiescent Supply Current Increase in ICC per Input Control Pins Data Pins 0 VI 3.6V VI = V CC or GND VIN = 0.8V VIN = 2.0V (Note 4) (Note 5) 0 VO 3.6V VI = V IH or VIL 0 (VO) 3.6V VI = V CC or GND VCC (VO) 3.6V (Note 6) VIH = VCC -0.6V Note 4: An external driver must source at least the specified current to switch from LOW-to-HIGH. Note 5: An external driver must sink at least the specified current to switch from HIGH-to-LOW. Note 6: Outputs disabled or 3-STATE only. Conditions VCC (V) 2.7-3.6 2.7-3.6 2.7-3.6 2.7 3.0 3.0 2.7-3.6 2.7 3.0 3.0 2.7-3.6 2.7-3.6 3.0 3.0 3.6 3.6 2.7-3.6 0 2.7-3.6 2.7-3.6 2.7-3.6 Min 2.0 Max Units V 0.8 VCC - 0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 5.0 5.0 75 -75 450 -450 10 10 20 20 750 V V V V V V V V V A A A A A A A A A 3 www.fairchildsemi.com 74VCXH16244 DC Electrical Characteristics (2.3V VCC 2.7V) Symbol VIH VIL VOH Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage IOH = -100 A IOH = -6 mA IOH = -12 mA IOH = -18 mA VOL LOW Level Output Voltage IOL = 100 A IOL = 12 mA IOL = 18 mA II II(HOLD) II(OD) IOZ IOFF ICC Input Leakage Current Bushold Input Minimum Drive Hold Current Bushold Input Over-Drive Current to Change State 3-STATE Output Leakage Power-OFF Leakage Current Quiescent Supply Current Control Pins Data Pins 0 VI 3.6V VI = VCC or GND VIN = 0.7V VIN = 1.6V (Note 7) (Note 8) 0 VO 3.6V VI = VIH or VIL 0 (VO) 3.6V VI = VCC or GND VCC (VO) 3.6V (Note 9) Note 7: An external driver must source at least the specified current to switch from LOW-to-HIGH. Note 8: An external driver must sink at least the specified current to switch from HIGH-to-LOW. Note 9: Outputs disabled or 3-STATE only. Conditions VCC (V) 2.3-2.7 2.3-2.7 2.3-2.7 2.3 2.3 2.3 2.3-2.7 2.3 2.3 2.3-2.7 2.3-2.7 2.3 2.3 2.7 2.7 2.3-2.7 0 2.3-2.7 2.3-2.7 Min 1.6 Max Units V 0.7 VCC - 0.2 2.0 1.8 1.7 0.2 0.4 0.6 5.0 5.0 45 -45 300 -300 10 10 20 20 V V V V V V V V A A A A A A A A DC Electrical Characteristics (1.65V VCC < 2.3V) Symbol VIH VIL VOH VOL II II(HOLD) II(OD) IOZ IOFF ICC Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Voltage Input Leakage Current Bushold Input Minimum Drive Hold Current Bushold Input Over-Drive Current to Change State 3-STATE Output Leakage Power-OFF Leakage Current Quiescent Supply Current Control Pins Data Pins IOH = -100 A IOH = -6 mA IOL = 100 A IOL = 6 mA 0 VI 3.6V VI = VCC or GND VIN = 0.57V VIN = 1.07V (Note 10) (Note 11) 0 VO 3.6V VI = VIH or VIL 0 (VO) 3.6V VI = VCC or GND VCC (VO) 3.6V (Note 12) Note 10: An external driver must source at least the specified current to switch from LOW-to-HIGH. Note 11: An external driver must sink at least the specified current to switch from HIGH-to-LOW. Note 12: Outputs disabled or 3-STATE only. Conditions VCC (V) 1.65-2.3 1.65-2.3 1.65-2.3 1.65 1.65-2.3 1.65 1.65-2.3 1.65-2.3 1.65 1.65 1.95 1.95 1.65-2.3 0 1.65-2.3 1.65-2.3 Min 0.65 x VCC Max Units V 0.35 x VCC VCC - 0.2 1.25 0.2 0.3 5.0 5.0 25 -25 200 -200 10 10 20 20 V V V V V A A A A A A A A www.fairchildsemi.com 4 74VCXH16244 AC Electrical Characteristics Symbol Parameter (Note 13) TA = -40C to +85C, CL = 30 pF, RL = 500 VCC = 3.3V 0.3V Min Max 2.5 3.5 3.5 0.5 0.8 0.8 0.8 VCC = 2.5V 0.2V Min 1.0 1.0 1.0 Max 3.0 4.1 3.8 0.5 VCC = 1.8V 0.15V Min 1.5 1.5 1.5 Max 6.0 8.2 6.8 0.75 ns ns ns ns Units tPHL, tPLH tPZL, tPZH tPLZ, tPHZ tOSHL tOSLH Prop Delay Output Enable Time Output Disable Time Output to Output Skew (Note 14) Note 13: For CL = 50PF, add approximately 300 ps to the AC maximum specification. Note 14: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Dynamic Switching Characteristics Symbol VOLP Parameter Quiet Output Dynamic Peak VOL Conditions CL = 30 pF, VIH = VCC, VIL = 0V VCC (V) 1.8 2.5 3.3 VOLV Quiet Output Dynamic Valley VOL CL = 30 pF, VIH = VCC, VIL = 0V 1.8 2.5 3.3 VOHV Quiet Output Dynamic Valley VOH CL = 30 pF, VIH = VCC, VIL = 0V 1.8 2.5 3.3 TA = +25C Typical 0.25 0.6 0.8 -0.25 -0.6 -0.8 1.5 1.9 2.2 V V V Units Capacitance Symbol CIN COUT CPD Parameter Input Capacitance Output Capacitance Power Dissipation Capacitance Conditions VCC = 1.8, 2.5V or 3.3V, VI = 0V or VCC VI = 0V or VCC, VCC = 1.8V, 2.5V or 3.3V VI = 0V or VCC, f = 10 MHz, VCC = 1.8V, 2.5V or 3.3V TA = +25C Typical 6 7 20 pF pF pF Units 5 www.fairchildsemi.com 74VCXH16244 AC Loading and Waveforms TEST tPLH, tPHL tPZL, tPLZ SWITCH Open 6V at VCC = 3.3 0.3V; VCC x 2 at VCC = 2.5 0.2V; 1.8V 0.15V GND FIGURE 1. AC Test Circuit tPZH, tPHZ FIGURE 2. Waveform for Inverting and Non-Inverting Functions FIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic Symbol Vmi Vmo VX VY VCC 3.3V 0.3V 1.5V 1.5V VOL +0.3V VOH -0.3V 2.5V 0.2V VCC/2 VCC/2 VOL +0.15V VOH -0.15V 1.8V 0.15V VCC/2 VCC/2 VOL +0.15V VOH -0.15V www.fairchildsemi.com 6 74VCXH16244 Low Voltage 16-Bit Buffer/Line Driver with Bushold Physical Dimensions inches (millimeters) unless otherwise noted 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD48 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: 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. 7 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. www.fairchildsemi.com www.fairchildsemi.com |
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