Revised March 2000 74VCXH162244 Low Voltage 16-Bit Buffer/Line Driver with Bushold and 26Ω Series Resistor in Outputs General Description Features The VCXH162244 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 VCXH162244 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 74VCXH162244 is also designed with 26Ω series resistors in the outputs. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers/transmitters. The 74VCXH162244 is designed for low voltage (1.65V to 3.6V) VCC applications with output capability up to 3.6V. The 74VCXH162244 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation. ■ 1.65V–3.6V VCC supply operation ■ 3.6V tolerant control inputs and outputs ■ Bushold on data inputs eliminates the need for external pull-up/pull-down resistors ■ 26Ω series resistors in outputs ■ tPD 3.3 ns max for 3.0V to 3.6V VCC 3.8 ns max for 2.3V to 2.7V VCC 7.6 ns max for 1.65V to 1.95V VCC ■ Static Drive (IOH/IOL) ±12 mA @ 3.0V VCC ±8 mA @ 2.3V VCC ±3 mA @ 1.65V VCC ■ Uses patented noise/EMI reduction circuitry ■ Latch-up performance exceeds 300 mA ■ ESD performance: Human body model > 2000V Machine model > 200V Ordering Code: Order Number Package Package Description Number 74VCXH162244MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide [TUBES] 74VCXH162244MTX (Note 1) MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide [TAPE and REEL] Note 1: Use this Order Number to receive devices in Tape and Reel. Logic Symbol Pin Descriptions Pin Names © 2000 Fairchild Semiconductor Corporation DS500231 Description OEn Output Enable Input (Active LOW) I0–I15 Bushold Inputs O0–O15 Outputs www.fairchildsemi.com 74VCXH162244 Low Voltage 16-Bit Buffer/Line Driver with Bushold January 2000 74VCXH162244 Connection Diagram Truth Tables Inputs Outputs OE1 I0–I3 O0–O3 L L L L H H H X Z Inputs Outputs OE2 I4–I7 O4–O7 L L L L H H H X Z Inputs Outputs OE3 I8–I11 L L L L H H H X Z I12–I15 O12–O15 Inputs OE4 O8–O11 Outputs L L L L H H H X Z H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial (HIGH or LOW, inputs may not float) Z = High Impedance Functional Description The 74VCXH162244 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 Recommended Operating Conditions (Note 4) −0.5V to +4.6V Supply Voltage (VCC) DC Input Voltage (VI) Power Supply −0.5V to 4.6V OEn Operating −0.5V to VCC + 0.5V I0 – I15 1.65V to 3.6V Data Retention Only Output Voltage (VO) 1.2V to 3.6V −0.3V to VCC Input Voltage −0.5V to +4.6V Outputs 3-STATE Outputs Active (Note 3) Output Voltage (VO) −0.5V to VCC +0.5V Output in Active States DC Input Diode Current (IIK) 0V to VCC Output in 3-STATE VI < 0V −50 mA 0.0V to 3.6V Output Current in IOH/IOL VCC = 3.0V to 3.6V ±12 mA VO < 0V −50 mA VCC = 2.3V to 2.7V ±8 mA VO > VCC +50 mA VCC = 1.65V to 2.3V DC Output Diode Current (IOK) DC Output Source/Sink Current ±50 mA (IOH/IOL) −40°C to +85°C Minimum Input Edge Rate (∆t/∆V) VIN = 0.8V to 2.0V, VCC = 3.0V DC VCC or GND Current per ±100 mA Supply Pin (ICC or GND) Storage Temperature Range (TSTG) ±3mA Free Air Operating Temperature (TA) 10 ns/V Note 2: 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. −65°C to +150°C Note 3: IO Absolute Maximum Rating must be observed. Note 4: Floating or unused control inputs must be held HIGH or LOW. DC Electrical Characteristics (2.7V < VCC ≤ 3.6V) Symbol Parameter Conditions VCC (V) Min 2.0 VIH HIGH Level Input Voltage 2.7–3.6 VIL LOW Level Input Voltage 2.7–3.6 VOH HIGH Level Output Voltage VOL II II(HOLD) II(OD) IOH = −100 µA LOW Level Output Voltage Input Leakage Current Bushold Input Minimum 0.8 V V 2.7–3.6 VCC − 0.2 V 2.7 2.2 V IOH = −8 mA 3.0 2.4 V IOH = −12 mA 3.0 2.2 V IOL = 100 µA 2.7–3.6 0.2 V IOL = 6 mA 2.7 0.4 V IOL = 8 mA 3.0 0.55 V IOL = 12 mA 3.0 0.8 V Control Pins 0 ≤ VI ≤ 3.6V 2.7–3.6 ±5.0 µA Data Pins VI = V CC or GND 2.7–3.6 ±5.0 µA VIN = 0.8V 3.0 75 Drive Hold Current VIN = 2.0V 3.0 −75 Bushold Input Over-Drive (Note 5) 3.6 450 3.6 −450 Current to Change State (Note 6) 3-STATE Output Leakage 0 ≤ VO ≤ 3.6V IOFF Power-OFF Leakage Current 0 ≤ (VO) ≤ 3.6V ICC Quiescent Supply Current µA µA 2.7–3.6 ±10 µA 0 10 µA VI = V CC or GND 2.7–3.6 20 µA VCC ≤ (VO) ≤ 3.6V (Note 7) 2.7–3.6 ±20 µA VIH = VCC −0.6V 2.7–3.6 750 µA VI = V IH or VIL Increase in ICC per Input Units IOH = −6 mA IOZ ∆ICC Max Note 5: An external driver must source at least the specified current to switch from LOW-to-HIGH. Note 6: An external driver must sink at least the specified current to switch from HIGH-to-LOW. Note 7: Outputs disabled or 3-STATE only. 3 www.fairchildsemi.com 74VCXH162244 Absolute Maximum Ratings(Note 2) 74VCXH162244 DC Electrical Characteristics (2.3V ≤ V CC ≤ 2.7V) Symbol Parameter Conditions VCC (V) Min 1.6 VIH HIGH Level Input Voltage 2.3–2.7 VIL LOW Level Input Voltage 2.3–2.7 VOH HIGH Level Output Voltage VOL IOH = −100 µA LOW Level Output Voltage Control Pins V V VCC − 0.2 V 2.3 2.0 V IOH = −6 mA 2.3 1.8 V IOH = −8 mA 2.3 1.7 IOL = 100 µA 2.3–2.7 0.2 V IOL = 6 mA 2.3 0.4 V IOL = 8 mA 2.3 0.6 V 0 ≤ VI ≤ 3.6V 2.3–2.7 ±5.0 µA VI = VCC or GND 2.3–2.7 ±5.0 µA II(HOLD) Bushold Input Minimum VIN = 0.7V 2.3 45 Drive Hold Current VIN = 1.6V 2.3 −45 IOZ 0.7 2.3–2.7 Input Leakage Current II(OD) Units IOH = −4 mA II Data Pins Max Bushold Input Over-Drive (Note 8) 2.7 300 Current to Change State (Note 9) 2.7 −300 3-STATE Output Leakage 0 ≤ VO ≤ 3.6V VI = VIH or VIL 2.3–2.7 V µA µA ±10 µA IOFF Power-OFF Leakage Current 0 ≤ (VO) ≤ 3.6V 0 10 µA ICC Quiescent Supply Current VI = VCC or GND 2.3–2.7 20 µA VCC ≤ (VO) ≤ 3.6V (Note 10) 2.3–2.7 ±20 µA Max Units Note 8: An external driver must source at least the specified current to switch from LOW-to-HIGH. Note 9: An external driver must sink at least the specified current to switch from HIGH-to-LOW. Note 10: Outputs disabled or 3-STATE only. DC Electrical Characteristics (1.65V ≤ V CC < 2.3V) Symbol Parameter Conditions VCC (V) Min 0.65 × VCC VIH HIGH Level Input Voltage 1.65-2.3 VIL LOW Level Input Voltage 1.65-2.3 VOH HIGH Level Output Voltage IOH = −100 µA VOL LOW Level Output Voltage II(HOLD) II(OD) IOZ Input Leakage Current V 1.65-2.3 VCC − 0.2 IOH = −3 mA 1.65 1.25 IOL = 100 µA 1.65-2.3 0.2 V 1.65 0.3 V IOL = 3mA II V 0.35 × VCC V V Control Pins 0 ≤ VI ≤ 3.6V 1.65-2.3 ±5.0 µA Data Pins VI = VCC or GND 1.65-2.3 ±5.0 µA Bushold Input Minimum VIN = 0.57V 1.65 25 Drive Hold Current VIN = 1.07V 1.65 −25 Bushold Input Over-Drive (Note 11) 1.95 200 Current to Change State (Note 12) 1.95 −200 3-STATE Output Leakage 0 ≤ VO ≤ 3.6V VI = VIH or VIL µA µA 1.65-2.3 ±10 µA IOFF Power-OFF Leakage Current 0 ≤ (VO) ≤ 3.6V 0 10 µA ICC Quiescent Supply Current VI = VCC or GND 1.65-2.3 20 µA VCC ≤ (VO) ≤ 3.6V (Note 13) 1.65-2.3 ±20 µA Note 11: An external driver must source at least the specified current to switch from LOW-to-HIGH. Note 12: An external driver must sink at least the specified current to switch from HIGH-to-LOW. Note 13: Outputs disabled or 3-STATE only. www.fairchildsemi.com 4 TA = −40°C to +85°C, CL = 30 pF, RL = 500Ω Symbol Parameter VCC = 3.3V ± 0.3V Min VCC = 2.5V ± 0.2V Max Min VCC = 1.8V ± 0.15V Max Min Units Max tPHL, tPLH Prop Delay 0.8 3.3 1.0 3.8 1.5 7.6 ns tPZL, tPZH Output Enable Time 0.8 3.8 1.0 5.1 1.5 9.8 ns tPLZ, tPHZ Output Disable Time 0.8 3.6 1.0 4.0 1.5 7.2 ns tOSHL Output to Output Skew tOSLH (Note 15) 0.75 ns 0.5 0.5 Note 14: For CL = 50PF, add approximately 300 ps to the AC maximum specification. Note 15: 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 VOLV VOHV Parameter Quiet Output Dynamic Peak VOL Quiet Output Dynamic Valley VOL Quiet Output Dynamic Valley VOH Conditions CL = 30 pF, VIH = VCC, VIL = 0V CL = 30 pF, VIH = VCC, VIL = 0V CL = 30 pF, VIH = VCC, VIL = 0V VCC TA = +25°C (V) Typical 1.8 0.15 2.5 0.25 3.3 0.35 1.8 −0.15 2.5 −0.25 3.3 −0.35 1.8 1.55 2.5 2.05 3.3 2.65 Units V V V Capacitance Symbol Parameter Conditions TA = +25°C Units Typical CIN Input Capacitance VCC = 1.8, 2.5V or 3.3V, VI = 0V or VCC 6 pF COUT Output Capacitance VI = 0V or VCC, VCC = 1.8V, 2.5V or 3.3V 7 pF CPD Power Dissipation Capacitance VI = 0V or VCC, f = 10 MHz, VCC = 1.8V, 2.5V or 3.3V 20 pF 5 www.fairchildsemi.com 74VCXH162244 AC Electrical Characteristics (Note 14) 74VCXH162244 AC Loading and Waveforms TEST SWITCH tPLH, tPHL Open tPZL, tPLZ 6V at VCC = 3.3 ± 0.3V; VCC x 2 at VCC = 2.5 ± 0.2V; 1.8 ± 0.15V tPZH, tPHZ GND FIGURE 1. AC Test Circuit 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 VCC 3.3V ± 0.3V 2.5V ± 0.2V 1.8V ± 0.15V Vmi 1.5V VCC/2 VCC/2 Vmo 1.5V VCC/2 VCC/2 VX VOL +0.3V VOL +0.15V VOL +0.15V VY VOH −0.3V VOH −0.15V VOH −0.15V www.fairchildsemi.com 6 74VCXH162244 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-, 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: 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