SN54/74LS240 SN54/74LS241 SN54/74LS244 OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS OCTAL BUFFER/ LINE DRIVER WITH 3-STATE OUTPUTS

Transcription

1 OCTA BUFFER/INE RIVER WIT 3-STATE S The SN54/S240, 241 and 244 are Octal Buffers and ine rivers designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers which provide improved PC board density. ysteresis at Inputs to Improve Noise Margins 3-State Outputs rive Bus ines or Buffer Memory Address Registers Input Clamp iodes imit igh-speed Termination Effects SN54/S240 SN54/S241 SN54/S244 OCTA BUFFER/ INE RIVER WIT 3-STATE S OW POWER SCOTTKY OGIC AN CONNECTION IAGRAMS IP (TOP VIEW) SN54/ S240 1 J SUFFI CERAMIC CASE N SUFFI PASTIC CASE SN54/ S241 1 W SUFFI SOIC CASE ORERING INFORMATION SN54SJ Ceramic SNSN Plastic SNSW SOIC SN54/ S244 FAST AN S TT ATA 5-387

2 SN54/S240 SN54/S241 SN54/S244 TRUT TABES SN54/ S240 1G, 2G SN54/ S244 1G, 2G 1G = IG Voltage evel = OW Voltage evel = Immaterial Z = IG Impedance SN54/ S241 2G GUARANTEE OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage V TA Operating Ambient Temperature Range C IO Output Current igh 54, 3.0 ma O ma IO Output Current ow ma FAST AN S TT ATA 5-388

3 SN54/S240 SN54/S241 SN54/S244 C CARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) imits Symbol Parameter Min Typ Max Unit Test Conditions VI Input IG Voltage 2.0 V VI Input OW Voltage VT+ VT ysteresis V VCC = MIN V Guaranteed Input IG Voltage for All Inputs Guaranteed Input OW Voltage for All Inputs VIK Input Clamp iode Voltage V VCC = MIN, IIN = 18 ma VO VO Output IG Voltage Output OW Voltage 54, V VCC = MIN, IO = 3.0 ma 54, 2.0 V VCC = MIN, IO = MA 54, V IO = ma VCC = VCC MIN, VIN = VI or VI V IO = 24 ma per Truth Table IOZ Output Off Current IG µa VCC = MA, VOUT = 2.7 V IOZ Output Off Current OW µa VCC = MA, VOUT = 0.4 V II Input IG Current µa VCC = MA, VIN = 2.7 V 0.1 ma VCC = MA, VIN = 7.0 V II Input OW Current 0.2 ma VCC = MA, VIN = 0.4 V IOS Output Short Circuit Current (Note 1) ma VCC = MA Power Supply Current Total, Output IG 27 Total, Output OW S ICC S241/ Total at IG Z S S241/ Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. ma VCC = MA AC CARACTERISTICS (TA = 25C, VCC = 5.0 V) imits Symbol Parameter Min Typ Max Unit Test Conditions tp tp Propagation elay, ata to Output S ns tp tp Propagation elay, ata to Output S241/ 244 tpz Output Enable Time to IG evel ns tpz Output Enable Time to OW evel 30 ns ns C = 45 pf, R = 667 Ω tpz Output isable Time from OW evel ns C = 5.0 pf, tpz Output isable Time from IG evel ns R = 667 Ω FAST AN S TT ATA 5-389

4 SN54/S240 SN54/S241 SN54/S244 AC WAVEFORMS Figure 1 Ω Figure 2 SWITC POSITIONS Figure 3 Figure 5 Figure 4 FAST AN S TT ATA 5-390

5 -A B- P Case W Suffix -Pin Plastic SO- (WIE) -T- G C K R 45 M F J Case J Suffix -Pin Ceramic ual In-ine A F G B C N K J M -A B C Case N Suffix -Pin Plastic -T- G E F K N M J FAST AN S TT ATA 5-391

6 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 consequential or incidental damages. Typical parameters can and do vary in different applications. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. Motorola does not convey any license 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 applications 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 against all claims, costs, damages, and expenses, 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. SYMBO SW1 SW2 iterature istribution Centers: USA: Motorola iterature istribution; P.O. Box 9; Phoenix, Arizona tpz Open Closed EUROPE: Motorola td.; European iterature Centre; 88 Tanners rive, Blakelands, Milton Keynes, MK14 5BP, England. JAPAN: Nippon Motorola td.; , Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. tpz Closed Open ASIA PACIFIC: Motorola Semiconductors.K. td.; Silicon arbour Center, No. 2 ai King Street, Tai Po Industrial Estate, Tai Po, N.T., ong Kong. tpz Closed Closed tpz Closed Closed FAST AN S TT ATA 5-392

7 This datasheet has been download from: atasheets for electronics components.