SN54LS273 MOTOROLA | Alldatasheet

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Technical content

OCTAL D FLIP-FLOP WITH CLEAR The SN54/74LS273 is a high-speed 8-Bit Register. The register consists of eight D-Type Flip-Flops with a Common Clock and an asynchronous active LOW Master Reset. This device is supplied in a 20-pin package featuring 0.3 inch lead spacing.

  • 8-Bit High Speed Register
  • Parallel Register
  • Common Clock and Master Reset
  • Input Clamp Diodes Limit High-Speed T ermination Effects /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 /C0077/C0082 /C0081/C0055/C0068/C0055/C0068/C0054/C0081/C0054 /C0068/C0053/C0081/C0053 /C0068/C0052 /C0081/C0048/C0068/C0048/C0068/C0049/C0081/C0049/C0081/C0050/C0068/C0050/C0068/C0051 /C0057 /C0049/C0048 /C0081/C0051/C0071/C0078/C0068 /C0049/C0050 /C0049/C0049 /C0081/C0052/C0067/C0080 CONNECTION DIAGRAM DIP (TOP VIEW) PIN NAMES LOADING (Note a) HIGH LOW NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. (74) Temperature Ranges. TRUTH TABLE MR CP D x Q x L X X L H H H H L L H = HIGH Logic Level L = LOW Logic Level X = Immaterial LOGIC DIAGRAM /C0067/C0080 /C0077/C0082 /C0068/C0048 /C0068/C0049 /C0068/C0050 /C0068/C0051 /C0068/C0052 /C0068/C0053 /C0068/C0054 /C0068/C0055 /C0081/C0048 /C0081/C0049 /C0081/C0050 /C0081/C0051 /C0081/C0052 /C0081/C0053 /C0081/C0054 /C0081/C0055 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0067/C0080 /C0068 /C0067/C0068/C0081 /C0049/C0052 /C0049 /C0050 /C0054 /C0055/C0051 /C0056/C0052 /C0053 /C0057 /C0049/C0049 /C0049/C0050 /C0049/C0051 /C0049/C0053 /C0086/C0067/C0067 /C0061 /C0080/C0073/C0078 /C0050/C0048 /C0071/C0078/C0068 /C0061 /C0080/C0073/C0078 /C0049/C0048 /C0061 /C0080/C0073/C0078 /C0078/C0085/C0077/C0066/C0069/C0082/C0083 /C0049/C0055 /C0049/C0056 /C0049/C0054 /C0049/C0057 SN54/74LS273 OCTAL D FLIP-FLOP WITH CLEAR LOW POWER SCHOTTKY

ORDERING INFORMATION

The SN54 /74LS273 is an 8-Bit Parallel Register with a common Clock and common Master Reset. When the MR input is LOW, the Q outputs are LOW, independent of the other inputs. Information meeting the setup and hold time requirements of the D inputs is transferred to the Q outputs on the LOW-to-HIGH transition of the clock input. 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 –0.4 mA IOL Output Current — Low 54 4.0 8.0 mA 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 VIK Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA VOH Output HIGH Voltage 54 2.5 3.5 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth TableVOH Output HIGH Voltage 74 2.7 3.5 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table VOL Output LOW Voltage 54, 74 0.25 0.4 V IOL = 4.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table VOL Output LOW Voltage 74 0.35 0.5 V IOL = 8.0 mA VIN = VIL or VIH per Truth Table 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 –0.4 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) –20 –100 mA VCC = MAX ICC Power Supply Current 27 mA VCC = MAX 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 fMAX Maximum Input Clock Frequency 30 40 MHz Figure 1 tPHL Propagation Delay, MR to Q Output 18 27 ns Figure 2 tPLH tPHL Propagation Delay, Clock to Output 17 27 ns Figure 1

/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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