54LCX16244 NSC | Alldatasheet
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n 5V tolerant inputs and outputs n Power down high impedance inputs and outputs n Supports live insertion/withdrawal n 2.0V–3.6V VCC supply operation n ±24 mA output drive n Implements patented noise/EMI reduction circuitry n Functionally compatible with 54 series 16244 n ESD performance: Human body model > 2000V Machine model> 200V n Standard Microcircuit Drawing (SMD) 5962-9950501 Ordering Code Order Number Package Number Package Description 54LCX16244W-QML WA48A 48-Lead Cerpack Package Logic Symbol Connection Diagram TRI-STATE® is a registered trademark of National Semiconductor Corporation. DS101059-1 Pin Assignment for Cerpack DS101059-2 April 1999 54LCX16244 Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs and Outputs © 1999 National Semiconductor Corporation DS101059 www.national.com
OE n Output Enable Input (Active Low) I0–I15 Inputs O 0–O 15 Outputs Functional Description The LCX16244 contains sixteen non-inverting buffers with TRI-STATE standard outputs. The device is nibble (4 bits) controlled with each nibble functioning identically, but inde- pendent of the other. The control pins can be shorted to- gether to obtain full 16-bit operation. The TRI-STATE outputs are controlled by an Output Enable (OE n) input for each nibble. When OEn is LOW, the outputs are in bi-state mode. When OE n is HIGH, the outputs are in the high impedance mode, but this does not interfere with entering new data into the inputs. Truth Tables Inputs Outputs Inputs Outputs OE 1 I0–I3 O 0–O 3 OE 2 I4–I7 O 4–O 7 LL L LL L LH H LH H HX Z HX Z Inputs Outputs Inputs Outputs OE
3 I8–I11 O 8–O 11 OE 4 I12–I15 O 12–O 15
H = High Voltage Level L = Low Voltage Level X = Immaterial Z = High Impedance Logic Diagram DS101059-3 www.national.com 2
Absolute Maximum Ratings(Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V CC ) −0.5V to +7.0V DC Input Voltage (VI) −0.5V to +7.0V DC Input Diode Current (IIK) VI < GND −50 mA DC Output Diode Current (IOK ) VO < GND −50mA VO ≥ VCC +50mA DC Output Voltage (VO ) (Note 2) Output in High or Low State -0.5V to V CC + 0.5V Output in TRI-STATE -0.5V to 7.0V DC Output Source or Sink Current (IO ) ±50mA DC V CC or Ground Current ±400mA Storage Temperature Range (TSTG ) −65˚C to +150˚C Power Dissapation 750mW Junction Temperature (T J) 175˚C Recommended Operating Conditions(Note 2) Supply Voltage (VCC ) Operating 2.0V to 3.6V Data Retention 1.5V to 3.6V Input Voltage (V I) 0V to 5.5V Output Voltage (VO ) High or Low State 0V to V CC TRI-STATE 0V to 5.5V Operating Temperature (TA) −55˚C to +125˚C Minimum Input Edge Rate (Δt/ΔV) VIN from 0.8V to 2.0V, VCC = 3.0V 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 oper- ated at these limits. The parametric values defined in the Electrical Charac- teristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recommended Operating Conditions” table will define the conditions for ac- tual device operation. Note 2:I O Absolute Maximum Rating must be observed. Symbol Parameter Conditions V CC TA = −55˚C to +125˚C Units (V) Min Max VIH HIGH Level Input Voltage 2.7–3.6 2.0 V VIL LOW Level Input Voltage 2.7–3.6 0.8 V VOH HIGH Level Output Voltage IOH = −100 µA 2.7–3.6 V CC − 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 V VOL LOW Level Output Voltage I OL = 100 µA 2.7–3.6 0.2 V IOL = 12 mA 2.7 0.4 V IOL = 24 mA 3.0 0.55 V VIC Negative Input Clamp Voltage IIN = -18mA 3.0 -1.2 V II Input Leakage Current 0 ≤ VI ≤ 5.5V 2.7–3.6 ±5.0 µA IOZ 3-STATE Output Leakage 0 ≤ VO ≤ 5.5V 2.7–3.6 ±5.0 µA VI = VIH or VIL IOFF Power-Off Leakage Current V I or VO = 5.5V 0 10 µA ICC Quiescent Supply Current V I = VCC or GND 2.7–3.6 20 µA ΔICC Increase in ICC per Input V IH = VCC −0.6V 2.7–3.6 500 µA www.national.com3
Symbol Parameter T A = −55˚C to +125˚C, CL = 50pF, RL = 500 Ω Units VCC = 3.3V ± 0.3V V CC = 2.7V Min Max Min Max tPHL Propagation Delay 0.5 5.5 1.0 6.0 ns tPLH Data to Output 0.5 5.5 1.0 6.0 tPZL Output Enable Time 0.5 6.5 1.0 7.0 ns tPZH 0.5 6.5 1.0 7.0 tPLZ Output Disable Time 1.0 6.0 1.0 6.0 ns tPHZ 1.0 6.0 1.0 6.0 tOSHL Output to Output Skew (Note 3) 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 speci- fication 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 V CC (V) TA = 25˚C Units Max VOLP Quiet Output Dynamic Peak VOL C L = 50 pF, VIH = 3.3V, VIL = 0V 3.3 1.2 V VOLV Quiet Output Dynamic Valley VOL C L = 50 pF, VIH = 3.3V, VIL = 0V 3.3 -1.1 V Capacitance Symbol Parameter Conditions Max Units C IN Input Capacitance V CC = Open, VI = 0V or VCC 10 pF C OUT Output Capacitance V CC = 3.3V, VI = 0V or VCC 12 pF C PD Power Dissipation Capacitance V CC = 3.3V, VI = 0V or VCC ,f = 10 MHz 40 pF www.national.com 4
Physical Dimensionsinches (millimeters) unless otherwise noted 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 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. 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 Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com 48-Lead Cerpack 54LCX16244 Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs and Outputs 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.