SN54LS240 MOTOROLA | Alldatasheet

Document overview

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Technical content

The SN54 /74LS240, 241 and 244 are Octal Buffers and Line Drivers designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers which provide improved PC board density.

  • Hysteresis at Inputs to Improve Noise Margins
  • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
  • Input Clamp Diodes Limit High-Speed T ermination Effects LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW) /C0049/C0056/C0049/C0055 /C0049/C0054 /C0049/C0053 /C0049/C0052 /C0049/C0051 /C0049 /C0050 /C0051 /C0052 /C0053 /C0054/C0055 /C0050/C0048 /C0049/C0057 /C0056 /C0086/C0067/C0067 /C0049/C0071 /C0050/C0071/C0049/C0089/C0049 /C0050/C0065/C0052 /C0049/C0089/C0050 /C0049/C0089/C0051/C0050/C0065/C0051 /C0050/C0065/C0050 /C0049/C0065/C0049 /C0050/C0089/C0052 /C0049/C0065/C0050 /C0050/C0089/C0051 /C0049/C0065/C0051 /C0050/C0089/C0050 /C0049/C0065/C0052 /C0057 /C0049/C0048 /C0050/C0089/C0049 /C0071/C0078/C0068 /C0049/C0050 /C0049/C0049 /C0049/C0089/C0052 /C0050/C0065/C0049 /C0049/C0056/C0049/C0055 /C0049/C0054 /C0049/C0053 /C0049/C0052 /C0049/C0051 /C0049 /C0050 /C0051 /C0052 /C0053 /C0054/C0055 /C0050/C0048 /C0049/C0057 /C0056 /C0086/C0067/C0067 /C0049/C0071 /C0050/C0071 /C0049/C0089/C0049 /C0050/C0065/C0052 /C0049/C0089/C0050 /C0049/C0089/C0051/C0050/C0065/C0051 /C0050/C0065/C0050 /C0049/C0065/C0049 /C0050/C0089/C0052 /C0049/C0065/C0050 /C0050/C0089/C0051 /C0049/C0065/C0051 /C0050/C0089/C0050 /C0049/C0065/C0052 /C0057 /C0049/C0048 /C0050/C0089/C0049 /C0071/C0078/C0068 /C0049/C0050 /C0049/C0049 /C0049/C0089/C0052 /C0050/C0065/C0049 /C0049/C0056/C0049/C0055 /C0049/C0054 /C0049/C0053 /C0049/C0052 /C0049/C0051 /C0049 /C0050 /C0051 /C0052 /C0053 /C0054/C0055 /C0050/C0048 /C0049/C0057 /C0056 /C0086/C0067/C0067 /C0049/C0071 /C0050/C0071/C0049/C0089/C0049 /C0050/C0065/C0052 /C0049/C0089/C0050 /C0049/C0089/C0051/C0050/C0065/C0051 /C0050/C0065/C0050 /C0049/C0065/C0049 /C0050/C0089/C0052 /C0049/C0065/C0050 /C0050/C0089/C0051 /C0049/C0065/C0051 /C0050/C0089/C0050 /C0049/C0065/C0052 /C0057 /C0049/C0048 /C0050/C0089/C0049 /C0071/C0078/C0068 /C0049/C0050 /C0049/C0049 /C0049/C0089/C0052 /C0050/C0065/C0049 SN54/74LS240 SN54/74LS241 SN54/74LS244 SN54/74LS240 SN54/74LS241 SN54/74LS244 OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS LOW POWER SCHOTTKY

ORDERING INFORMATION

SN54/74LS240 •/n636861720000000000000000SN54/74LS241 •/n636861720000000000000000SN54/74LS244 TRUTH TABLES SN54/74LS240 INPUTS OUTPUT 1G , 2G D OUTPUT L L H L H X H L (Z) SN54/74LS244 INPUTS OUTPUT 1G , 2G D OUTPUT L L H L H X L H (Z) SN54/74LS241 INPUTS OUTPUT INPUTS OUTPUT 1G D OUTPUT 2G D OUTPUT L L H L H X L H (Z) H H L L H X L H (Z) H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = HIGH Impedance GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient T emperature Range 54 –55 125 IOH Output Current — High 54, 74 –3.0 mAOH –12 –15 mA IOL Output Current — Low 54 mA

SN54/74LS240 •/n636861720000000000000000SN54/74LS241 •/n636861720000000000000000SN54/74LS244 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Symbol Parameter Limits Unit Test ConditionsSymbol Parameter Min Typ Max Unit Test Conditions VIH Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage for All Inputs VIL Input LOW Voltage 54 0.7 V Guaranteed Input LOW Voltage for All InputsVIL Input LOW Voltage 74 0.8 V Guaranteed Input LOW Voltage for All Inputs VT+–VT– Hysteresis 0.2 0.4 V VCC = MIN VIK Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA VOH Output HIGH Voltage 54, 74 2.4 3.4 V VCC = MIN, IOH = –3.0 mA VOH Output HIGH Voltage 54, 74 2.0 V VCC = MIN, IOH = MAX VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 12 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table VOL Output LOW Voltage 74 0.35 0.5 V IOL = 24 mA VIN = VIL or VIH per Truth Table IOZH Output Off Current HIGH 20 µA VCC = MAX, VOUT = 2.7 V IOZL Output Off Current LOW –20 µA VCC = MAX, VOUT = 0.4 V IIH Input HIGH Current 20 µA VCC = MAX, VIN = 2.7 V IIH Input HIGH Current 0.1 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current –0.2 mA VCC = MAX, VIN = 0.4 V IOS Output Short Circuit Current (Note 1)–40 –225 mA VCC = MAX ICC Power Supply Current Total, Output HIGH 27 mA VCC = MAXICC Total, Output LOW LS240 44 mA VCC = MAXICC LS241/244 46 mA VCC = MAX Total at HIGH Z LS240 50 LS241/244 54 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Symbol Parameter Limits Unit Test ConditionsSymbol Parameter Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay, Data to Output LS240 9.0 18 ns C L = 45 pF , R L = 667 Ω tPLH tPHL Propagation Delay, Data to Output LS241/244 18 ns C L = 45 pF , R L = 667 Ω tPZH Output Enable Time to HIGH Level 15 23 ns L = 667 Ω tPZL Output Enable Time to LOW Level 20 30 ns tPLZ Output Disable Time from LOW Level 15 25 ns C L = 5.0 pF , R L = 667 ΩtPHZ Output Disable Time from HIGH Level 10 18 ns C L = 5.0 pF , R L = 667 Ω

/C0078/C0079/C0084/C0069/C0083/C0058 /C0049/C0046 /C0068/C0073/C0077/C0069/C0078/C0083/C0073/C0079/C0078/C0073/C0078/C0071 /C0065/C0078/C0068 /C0084/C0079/C0076/C0069/C0082/C0065/C0078/C0067/C0073/C0078/C0071 /C0080/C0069/C0082 /C0065/C0078/C0083/C0073 /C0089/C0049/C0052/C0046/C0053/C0077/C0044 /C0049/C0057/C0056/C0050/C0046 /C0050/C0046 /C0067/C0079/C0078/C0084/C0082/C0079/C0076/C0076/C0073/C0078/C0071 /C0068/C0073/C0077/C0069/C0078/C0083/C0073/C0079/C0078/C0058 /C0077/C0073/C0076/C0076/C0073/C0077/C0069/C0084/C0069/C0082/C0046 /C0051/C0046 /C0068/C0073/C0077/C0069/C0078/C0083/C0073/C0079/C0078 /C0065 /C0065/C0078/C0068 /C0066 /C0068/C0079 /C0078/C0079/C0084 /C0073/C0078/C0067/C0076/C0085/C0068/C0069 /C0077/C0079/C0076/C0068 /C0080/C0082/C0079/C0084/C0082/C0085/C0083/C0073/C0079/C0078/C0046 /C0052/C0046 /C0077/C0065/C0088/C0073/C0077/C0085/C0077 /C0077/C0079/C0076/C0068 /C0080/C0082/C0079/C0084/C0082/C0085/C0083/C0073/C0079/C0078 /C0048/C0046/C0049/C0053 /C0040/C0048/C0046/C0048/C0048/C0054/C0041 /C0080/C0069/C0082 /C0083/C0073/C0068/C0069/C0046 /C0053/C0046 /C0055/C0053/C0049/C0068/C0262/C0048/C0049/C0044 /C0065/C0078/C0068 /C0262/C0048/C0050 /C0079/C0066/C0083/C0079/C0076/C0069/C0084/C0069/C0044 /C0078/C0069/C0087 /C0083/C0084/C0065/C0078/C0068/C0065/C0082/C0068 /C0055/C0053/C0049/C0068/C0262/C0048/C0051/C0046 /C0077/C0073/C0078 /C0077/C0073/C0078/C0077/C0065/C0088 /C0077/C0065/C0088 /C0077/C0073/C0076/C0076/C0073/C0077/C0069/C0084/C0069/C0082/C0083 /C0073/C0078/C0067/C0072/C0069/C0083 /C0068/C0073/C0077 /C0065 /C0066 /C0067 /C0068 /C0070 /C0071 /C0074 /C0075 /C0077 /C0080 /C0082 /C0049/C0050/C0046/C0054/C0053 /C0055/C0046/C0052/C0048 /C0050/C0046/C0051/C0053 /C0048/C0046/C0051/C0053 /C0048/C0046/C0053/C0048 /C0048/C0046/C0050/C0053 /C0048/C0046/C0049/C0048 /C0048° /C0049/C0048/C0046/C0048/C0053 /C0048/C0046/C0050/C0053 /C0049/C0050/C0046/C0057/C0053 /C0055/C0046/C0054/C0048 /C0050/C0046/C0054/C0053 /C0048/C0046/C0052/C0057 /C0048/C0046/C0057/C0048 /C0048/C0046/C0051/C0050 /C0048/C0046/C0050/C0053 /C0055°/C0258 /C0049/C0048/C0046/C0053/C0053 /C0048/C0046/C0055/C0053 /C0048/C0046/C0052/C0057/C0057 /C0048/C0046/C0050/C0057/C0050 /C0048/C0046/C0048/C0057/C0051 /C0048/C0046/C0048/C0049/C0052 /C0048/C0046/C0048/C0050/C0048 /C0048/C0046/C0048/C0049/C0048 /C0048/C0046/C0048/C0048/C0052 /C0048°/C0258 /C0048/C0046/C0051/C0057/C0053 /C0048/C0046/C0048/C0049/C0048 /C0048/C0046/C0053/C0049/C0048 /C0048/C0046/C0050/C0057/C0057 /C0048/C0046/C0049/C0048/C0052 /C0048/C0046/C0048/C0049/C0057 /C0048/C0046/C0048/C0051/C0053 /C0048/C0046/C0048/C0049/C0050 /C0048/C0046/C0048/C0048/C0057 /C0055°/C0258 /C0048/C0046/C0052/C0049/C0053 /C0048/C0046/C0048/C0050/C0057 /C0049/C0046/C0050/C0055 /C0066/C0083/C0067 /C0048/C0046/C0048/C0053/C0048 /C0066/C0083/C0067 -A- -B- P /C0049/C0048 /C0080/C00761 10 1120 G -T- D /C0050/C0048 /C0080/C0076K C /C0083/C0069/C0065/C0084/C0073/C0078/C0071 /C0080/C0076/C0065/C0078/C0069 R X 45° M F J Case 751D-03 DW Suffix 20-Pin Plastic SO-20 (WIDE) /C0066/C0048/C0046/C0050/C0053 /C0040/C0048/C0046/C0048/C0049/C0048/C0041/C0077 /C0077 /C0084/C0048/C0046/C0050/C0053 /C0040/C0048/C0046/C0048/C0049/C0048/C0041 /C0066 /C0065/C0077 /C0083 /C0083 Case 732-03 J Suffix 20-Pin Ceramic Dual In-Line /C0078/C0079/C0084/C0069/C0083/C0058 /C0049/C0046 /C0076/C0069/C0065/C0068/C0083 /C0087/C0073/C0084/C0072/C0073/C0078 /C0048/C0046/C0050/C0053 /C0109/C0109 /C0040/C0048/C0046/C0048/C0049/C0048/C0041 /C0068/C0073/C0065/C0046/C0044 /C0084/C0082/C0085/C0069 /C0080/C0079/C0083/C0073/C0084/C0073/C0079/C0078 /C0065/C0084 /C0083/C0069/C0065/C0084/C0073/C0078/C0071 /C0080/C0076/C0065/C0078/C0069/C0044 /C0065/C0084 /C0077/C0065/C0088/C0073/C0077/C0085/C0077 /C0077/C0065/C0084/C0069/C0082/C0073/C0065/C0076 /C0067/C0079/C0078/C0068/C0073/C0084/C0073/C0079/C0078/C0046 /C0050/C0046 /C0068/C0073/C0077 /C0076 /C0084/C0079 /C0067/C0069/C0078/C0084/C0069/C0082 /C0079/C0070 /C0076/C0069/C0065/C0068/C0083 /C0087/C0072/C0069/C0078 /C0070/C0079/C0082/C0077/C0069/C0068 /C0080/C0065/C0082/C0065/C0076/C0076/C0069/C0076/C0046 /C0051/C0046 /C0068/C0073/C0077 /C0065 /C0065/C0078/C0068 /C0066 /C0073/C0078/C0067/C0076/C0085/C0068/C0069/C0083 /C0077/C0069/C0078/C0073/C0083/C0067/C0085/C0083/C0046 /C0077/C0073/C0078 /C0077/C0073/C0078/C0077/C0065/C0088 /C0077/C0065/C0088 /C0077/C0073/C0076/C0076/C0073/C0077/C0069/C0084/C0069/C0082/C0083 /C0073/C0078/C0067/C0072/C0069/C0083 /C0068/C0073/C0077 /C0050/C0051/C0046/C0056/C0056 /C0054/C0046/C0054/C0048 /C0051/C0046/C0056/C0049 /C0048/C0046/C0051/C0056 /C0049/C0046/C0052/C0048 /C0048/C0046/C0053/C0049 /C0048/C0046/C0050/C0048 /C0051/C0046/C0049/C0056 /C0050/C0053/C0046/C0049/C0053 /C0055/C0046/C0052/C0057 /C0053/C0046/C0048/C0056 /C0048/C0046/C0053/C0054 /C0049/C0046/C0054/C0053 /C0049/C0046/C0050/C0055 /C0048/C0046/C0051/C0048 /C0052/C0046/C0048/C0054 /C0048° /C0048/C0046/C0050/C0053 /C0048/C0046/C0057/C0052/C0048 /C0048/C0046/C0050/C0054/C0048 /C0048/C0046/C0049/C0053/C0048 /C0048/C0046/C0048/C0049/C0053 /C0048/C0046/C0048/C0053/C0053 /C0048/C0046/C0048/C0050/C0048 /C0048/C0046/C0048/C0048/C0056 /C0048/C0046/C0049/C0050/C0053 /C0048/C0046/C0057/C0057/C0048 /C0048/C0046/C0050/C0057/C0053 /C0048/C0046/C0050/C0048/C0048 /C0048/C0046/C0048/C0050/C0050 /C0048/C0046/C0048/C0054/C0053 /C0048/C0046/C0048/C0053/C0048 /C0048/C0046/C0048/C0049/C0050 /C0048/C0046/C0049/C0054/C0048 /C0049/C0053° /C0049/C0046/C0048/C0050 /C0050/C0046/C0053/C0052 /C0066/C0083/C0067 /C0055/C0046/C0054/C0050 /C0066/C0083/C0067 /C0048/C0046/C0049/C0048/C0048 /C0066/C0083/C0067 /C0048/C0046/C0051/C0048/C0048 /C0066/C0083/C0067 /C0065 /C0066 /C0067 /C0068 /C0070 /C0071 /C0072 /C0074 /C0075 /C0076 /C0077 /C0078 /C0048° /C0048/C0046/C0048/C0049/C0048 /C0049/C0053° /C0048/C0046/C0048/C0052/C0048 B C D GH J M N A L 20 11 1 10 /C0083/C0069/C0065/C0084/C0073/C0078/C0071 /C0080/C0076/C0065/C0078/C0069K F Case 738-03 N Suffix 20-Pin Plastic /C0077/C0073/C0078 /C0077/C0073/C0078/C0077/C0065/C0088 /C0077/C0065/C0088 /C0077/C0073/C0076/C0076/C0073/C0077/C0069/C0084/C0069/C0082/C0083 /C0073/C0078/C0067/C0072/C0069/C0083 /C0068/C0073/C0077 /C0050/C0053/C0046/C0054/C0054 /C0054/C0046/C0049/C0048 /C0051/C0046/C0056/C0049 /C0048/C0046/C0051/C0057 /C0049/C0046/C0050/C0055 /C0048/C0046/C0050/C0049 /C0050/C0046/C0056/C0048 /C0050/C0055/C0046/C0049/C0055 /C0054/C0046/C0054/C0048 /C0052/C0046/C0053/C0055 /C0048/C0046/C0053/C0053 /C0049/C0046/C0055/C0055 /C0048/C0046/C0051/C0056 /C0051/C0046/C0053/C0053 /C0048° /C0048/C0046/C0053/C0049 /C0049/C0046/C0048/C0049/C0048 /C0048/C0046/C0050/C0052/C0048 /C0048/C0046/C0049/C0053/C0048 /C0048/C0046/C0048/C0049/C0053 /C0048/C0046/C0048/C0053/C0048 /C0048/C0046/C0048/C0048/C0056 /C0048/C0046/C0049/C0049/C0048 /C0049/C0046/C0048/C0055/C0048 /C0048/C0046/C0050/C0054/C0048 /C0048/C0046/C0049/C0056/C0048 /C0048/C0046/C0048/C0050/C0050 /C0048/C0046/C0048/C0055/C0048 /C0048/C0046/C0048/C0049/C0053 /C0048/C0046/C0049/C0052/C0048 /C0049/C0053° /C0049/C0046/C0048/C0049 /C0049/C0046/C0050/C0055 /C0066/C0083/C0067 /C0050/C0046/C0053/C0052 /C0066/C0083/C0067 /C0055/C0046/C0054/C0050 /C0066/C0083/C0067 /C0048/C0046/C0048/C0053/C0048 /C0066/C0083/C0067 /C0048/C0046/C0049/C0048/C0048 /C0066/C0083/C0067 /C0048/C0046/C0051/C0048/C0048 /C0066/C0083/C0067 /C0065 /C0066 /C0067 /C0068 /C0069 /C0070 /C0071 /C0074 /C0075 /C0076 /C0077 /C0078 /C0048° /C0048/C0046/C0048/C0050/C0048 /C0049/C0053° /C0048/C0046/C0048/C0052/C0048 /C0078/C0079/C0084/C0069/C0083/C0058 /C0049/C0046 /C0068/C0073/C0077/C0069/C0078/C0083/C0073/C0079/C0078/C0073/C0078/C0071 /C0065/C0078/C0068 /C0084/C0079/C0076/C0069/C0082/C0065/C0078/C0067/C0073/C0078/C0071 /C0080/C0069/C0082 /C0065/C0078/C0083/C0073 /C0089/C0049/C0052/C0046/C0053/C0077/C0044 /C0049/C0057/C0056/C0050/C0046 /C0050/C0046 /C0067/C0079/C0078/C0084/C0082/C0079/C0076/C0076/C0073/C0078/C0071 /C0068/C0073/C0077/C0069/C0078/C0083/C0073/C0079/C0078/C0058 /C0073/C0078/C0067/C0072/C0046 /C0051/C0046 /C0068/C0073/C0077/C0069/C0078/C0083/C0073/C0079/C0078 /C0127/C0076/C0034 /C0084/C0079 /C0067/C0069/C0078/C0084/C0069/C0082 /C0079/C0070 /C0076/C0069/C0065/C0068 /C0087/C0072/C0069/C0078 /C0070/C0079/C0082/C0077/C0069/C0068 /C0080/C0065/C0082/C0065/C0076/C0076/C0069/C0076/C0046 /C0052/C0046 /C0068/C0073/C0077/C0069/C0078/C0083/C0073/C0079/C0078 /C0127/C0066/C0034 /C0068/C0079/C0069/C0083 /C0078/C0079/C0084 /C0073/C0078/C0067/C0076/C0085/C0068/C0069 /C0077/C0079/C0076/C0068 /C0070/C0076/C0065/C0083/C0072/C0046 /C0053/C0046 /C0055/C0051/C0056/C0262/C0048/C0050 /C0079/C0066/C0083/C0079/C0076/C0069/C0084/C0069/C0044 /C0078/C0069/C0087 /C0083/C0084/C0065/C0078/C0068/C0065/C0082/C0068 /C0055/C0051/C0056/C0262/C0048/C0051/C0046 -A- B C K NE G F D /C0050/C0048 /C0080/C0076 J/C0050/C0048 /C0080/C0076 L M -T- /C0083/C0069/C0065/C0084/C0073/C0078/C0071 /C0080/C0076/C0065/C0078/C0069 1 10 1120 /C0084 /C0065/C0048/C0046/C0050/C0053 /C0040/C0048/C0046/C0048/C0049/C0048/C0041/C0077 /C0077 /C0084 /C0066/C0048/C0046/C0050/C0053 /C0040/C0048/C0046/C0048/C0049/C0048/C0041/C0077 /C0077

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