SN54/74LS540 SN54/74LS541 OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS OCTAL BUFFER/ LINE DRIVER WITH 3-STATE OUTPUTS FAST AND LS TTL DATA 5-568

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1 OTAL BUFFER/LINE RIVER WITH 3-STATE OUTPUTS The SN54/LS540 and SN54/LS54 are octal buffers and line drivers with the same functio as the LS240 and LS24, but with pinouts on the opposite side of the package. These device types are designed to be used as memory address drivers, clock drivers and bus-oriented tramitters/ receivers. These devices are especially useful as output ports for the microprocessors, allowing ease of layout and greater P board deity. Hysteresis at Inputs to Improve Noise Margin PNP Inputs Reduce Loading 3-State Outputs rive Bus Lines Inputs and Outputs Opposite Side of Package, Allowing Easier Interface to Microprocessors Input lamp iodes Limit High-Speed Termination Effects LOI AN ONNETION IARAMS IP (TOP VIEW) SN54/ LS540 SN54/LS540 SN54/LS54 OTAL BUFFER/ LINE RIVER WITH 3-STATE OUTPUTS LOW POWER SHOTTY J SUFFIX ERAMI ASE N SUFFIX PLASTI ASE SN54/ LS54 W SUFFIX SOI ASE ORERIN INFORMATION SN54LSXXXJ eramic SNLSXXXN Plastic SNLSXXXW SOI UARANTEE OPERATIN RANES Symbol Parameter Min Typ Max Unit V Supply Voltage V TA Operating Ambient Temperature Range IOH Output urrent High IOL Output urrent Low

2 SN54/LS540 SN54/LS54 LS540 BLO IARAM LS54 INPUTS OUTPUTS E E2 LS540 LS54 L L H L H H X X Z Z X H X Z Z L L L H L L = LOW Voltage Level H = HIH Voltage Level X = Immaterial Z = High Impedance HARATERISTIS OVER OPERATIN TEMPERATURE RANE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test onditio VIH Input HIH Voltage 2.0 V VIL Input LOW Voltage V uaranteed Input HIH Voltage for All Inputs uaranteed Input LOW Voltage for All Inputs VI Input lamp iode Voltage V V = MIN, IIN = 8 VOH VOL Output HIH Voltage Output LOW Voltage 54, V V = MIN, IOH = , 2.0 V V = MIN, IOH = MAX, VIL = 0.5 V 54, V IOL = 2 V = V MIN, VIN = VIL or VIH V IOL = 24 per Truth Table VT+ VT Hysteresis V V = MIN IOZH Output Off urrent HIH µa V = MAX, VOUT = 2.7 V IOZL Output Off urrent LOW µa V = MAX, VOUT = 0.4 V IIH Input HIH urrent µa V = MAX, VIN = 2.7 V 0. V = MAX, VIN = 7.0 V IIL Input LOW urrent 0.2 V = MAX, VIN = 0.4 V IOS Short ircuit urrent (Note ) V = MAX I Power Supply urrent Total, Output HIH LS Total, Output LOW Total Output 3-State LS54 32 LS V = MAX LS54 52 LS LS54 55 Note : Not more than one output should be shorted at a time, nor for more than second

3 SN54/LS540 SN54/LS54 A HARATERISTIS (TA = 25) Limits Symbol Parameter Min Typ Max Unit Test onditio tplh LS tplh Propagation elay, LS tphl ata to Output LS tphl LS V = 5.0 V L = 45 pf Output Enable Time LS RL = 667 Ω tpzh to HIH Level LS tpzl Output Enable Time LS to LOW Level LS54 38 tphz Output isable Time LS to HIH Level LS L = 5.0 pf Output isable Time LS tplz to LOW Level LS A WAVEFORMS Figure Ω Figure 2 Figure 3 SWITH POSITIONS SYMBOL SW SW2 tpzh Open losed tpzl losed Open tplz losed losed tphz losed losed Figure 4 Figure

4 -A- 0 -B- P ase W Suffix -Pin Plastic SO- (WIE) -T- R X 45 M F J ase J Suffix -Pin eramic ual In-Line 0 H A F B N J L M -A- 0 B ase N Suffix -Pin Plastic L -T- E F N M J 5-57

5 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation coequential or incidental damages. Typical parameters can and do vary in different applicatio. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. Motorola does not convey any licee under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applicatio intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless agait all claims, costs, damages, and expees, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. SYMBOL SW SW2 Literature istribution enters: USA: Motorola Literature istribution; P.O. Box 92; Phoenix, Arizona tpzh Open losed EUROPE: Motorola Ltd.; European Literature entre; 88 Tanners rive, Blakelands, Milton eynes, M4 5BP, England. JAPAN: Nippon Motorola Ltd.; 4-32-, Nishi-otanda, Shinagawa-ku, Tokyo 4, Japan. tpzl losed Open ASIA PAIFI: Motorola Semiconductors H.. Ltd.; Silicon Harbour enter, No. 2 ai ing Street, Tai Po Industrial Estate, Tai Po, N.T., Hong ong. tplz losed losed tphz losed losed 5-572

NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. TRUTH TABLES

NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. TRUTH TABLES QUA BUS TRANSEIVER The SN54/LS242 and SN54/LS243 are Quad Bus Transmitters/Receivers designed for 4-line asynchronous 2-way data communications between data buses. Hysteresis at Inputs to Improve Noise