54LCX16244 Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs and Outputs General Description Features The LCX16244 contains sixteen non-inverting buffers with TRI-STATE (R) outputs designed to be employed as a memory and address driver, clock driver, or bus oriented transmitter/ receiver. The device is nibble controlled. Each nibble has separate TRI-STATE control inputs which can be shorted together for full 16-bit operation. The LCX16244 is designed for low voltage (3.3V) VCC applications with capability of interfacing to a 5V signal environment. The LCX16244 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. n n n n n n n n 5V tolerant inputs and outputs Power down high impedance inputs and outputs Supports live insertion/withdrawal 2.0V-3.6V VCC supply operation 24 mA output drive Implements patented noise/EMI reduction circuitry Functionally compatible with 54 series 16244 ESD performance: Human body model > 2000V Machine model > 200V n Standard Microcircuit Drawing (SMD) 5962-9950501 Ordering Code Order Number 54LCX16244W-QML Package Number WA48A Package Description 48-Lead Cerpack Package Logic Symbol Connection Diagram Pin Assignment for Cerpack DS101059-1 DS101059-2 TRI-STATE (R) is a registered trademark of National Semiconductor Corporation. (c) 2001 National Semiconductor Corporation DS101059 www.national.com 54LCX16244 Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs and Outputs April 1999 54LCX16244 Connection Diagram controlled with each nibble functioning identically, but independent of the other. The control pins can be shorted together to obtain full 16-bit operation. The TRI-STATE outputs are controlled by an Output Enable (OEn) input for each nibble. When OEn is LOW, the outputs are in bi-state mode. When OEn is HIGH, the outputs are in the high impedance mode, but this does not interfere with entering new data into the inputs. (Continued) Pin Descriptions Pin Names Description OEn Output Enable Input (Active Low) I0-I15 Inputs O0-O15 Outputs Functional Description The LCX16244 contains sixteen non-inverting buffers with TRI-STATE standard outputs. The device is nibble (4 bits) Inputs Outputs Inputs Outputs OE1 I0-I3 O0-O3 OE2 I4-I7 L L L L L L L H H L H H H X Z H X Z Inputs Outputs Inputs O4-O7 Outputs OE3 I8-I11 O8-O11 OE4 I12-I15 L L L L L L L H H L H H H X Z H X Z H = High Voltage Level L = Low Voltage Level X = Immaterial Z = High Impedance Logic Diagram DS101059-3 www.national.com 2 O12-O15 Recommended Operating Conditions (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) DC Input Voltage (VI) DC Input Diode Current (IIK) VI < GND DC Output Diode Current (IOK) VO < GND VO VCC DC Output Voltage (VO) (Note 2) Output in High or Low State Output in TRI-STATE DC Output Source or Sink Current (IO) DC VCC or Ground Current Storage Temperature Range (TSTG) Power Dissapation Junction Temperature (TJ) Supply Voltage (VCC) Operating Data Retention Input Voltage (VI) Output Voltage (VO) High or Low State TRI-STATE Operating Temperature (TA) Minimum Input Edge Rate (t/V) VIN from 0.8V to 2.0V, VCC = 3.0V -0.5V to +7.0V -0.5V to +7.0V -50 mA -50mA +50mA -0.5V to VCC + 0.5V -0.5V to 7.0V 2.0V to 3.6V 1.5V to 3.6V 0V to 5.5V 0V to VCC 0V to 5.5V -55C to +125C 0ns/V to 10ns/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. 50mA 400mA Note 2: IO Absolute Maximum Rating must be observed. -65C to +150C 750mW 175C DC Electrical Characteristics Symbol Parameter VIH HIGH Level Input Voltage VIL LOW Level Input Voltage VOH HIGH Level Output Voltage VOL LOW Level Output Voltage Conditions VCC TA = -55C to +125C (V) Min 2.7-3.6 2.0 2.7-3.6 Units Max V 0.8 V IOH = -100 A 2.7-3.6 VCC - 0.2 V IOH = -12 mA 2.7 2.2 V IOH = -12 mA 3.0 2.4 V IOH = -24 mA 3.0 2.2 IOL = 100 A 2.7-3.6 IOL = 12 mA 2.7 0.4 V IOL = 24 mA 3.0 0.55 V IIN = -18mA 3.0 -1.2 V V 0.2 V VIC Negative Input Clamp Voltage II Input Leakage Current 0 VI 5.5V 2.7-3.6 3-STATE Output Leakage 0 VO 5.5V 2.7-3.6 5.0 5.0 A IOZ IOFF Power-Off Leakage Current VI or VO = 5.5V ICC Quiescent Supply Current VI = VCC or GND ICC Increase in ICC per Input A VI = VIH or VIL 0 10 A 2.7-3.6 20 A 3.6V VI, VO 5.5V 2.7-3.6 20 A VIH = VCC -0.6V 2.7-3.6 500 A 3 www.national.com 54LCX16244 Absolute Maximum Ratings (Note 1) 54LCX16244 AC Electrical Characteristics Symbol TA = -55C to +125C, CL = 50pF, RL = 500 Parameter VCC = 3.3V 0.3V Units VCC = 2.7V Min Max Min Max tPHL Propagation Delay 0.5 5.5 1.0 6.0 tPLH Data to Output 0.5 5.5 1.0 6.0 tPZL Output Enable Time 0.5 6.5 1.0 7.0 0.5 6.5 1.0 7.0 1.0 6.0 1.0 6.0 1.0 6.0 1.0 tPZH tPLZ Output Disable Time tPHZ tOSHL Output to Output Skew (Note 3) ns ns ns 6.0 1.0 1.0 ns tOSLH Note 3: 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). Parameter guaranteed by design. Dynamic Switching Characteristics Symbol Parameter Conditions VCC (V) TA = 25C Units Max VOLP Quiet Output Dynamic Peak VOL CL = 50 pF, VIH = 3.3V, VIL = 0V 3.3 1.2 V VOLV Quiet Output Dynamic Valley VOL CL = 50 pF, VIH = 3.3V, VIL = 0V 3.3 -1.1 V Capacitance Symbol Parameter Conditions Max Units 10 pF CIN Input Capacitance VCC = Open, VI = 0V or VCC COUT Output Capacitance VCC = 3.3V, VI = 0V or VCC 12 pF CPD Power Dissipation Capacitance VCC = 3.3V, VI = 0V or VCC, f = 10 MHz 40 pF www.national.com 4 inches (millimeters) unless otherwise noted 48-Lead Cerpack Package Number WA48A LIFE SUPPORT POLICY NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL 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 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. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Francais Tel: +33 (0) 1 41 91 8790 2. A critical component is 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. National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. 54LCX16244 Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs and Outputs Physical Dimensions