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SN54LS377 Dataheets PDF



Part Number SN54LS377
Manufacturers Motorola Inc
Logo Motorola  Inc
Description OCTAL D FLIP-FLOP
Datasheet SN54LS377 DatasheetSN54LS377 Datasheet (PDF)

OCTAL D FLIP-FLOP WITH ENABLE; HEX D FLIP-FLOP WITH ENABLE; 4-BIT D FLIP-FLOP WITH ENABLE The SN54 / 74LS377 is an 8-bit register built using advanced Low Power Schottky technology. This register consists of eight D-type flip-flops with a buffered common clock and a buffered common clock enable. The SN54 / 74LS378 is a 6-Bit Register with a buffered common enable. This device is similar to the SN54 / 74LS174, but with common Enable rather than common Master Reset. The SN54 / 74LS379 is a 4-Bit R.

  SN54LS377   SN54LS377



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OCTAL D FLIP-FLOP WITH ENABLE; HEX D FLIP-FLOP WITH ENABLE; 4-BIT D FLIP-FLOP WITH ENABLE The SN54 / 74LS377 is an 8-bit register built using advanced Low Power Schottky technology. This register consists of eight D-type flip-flops with a buffered common clock and a buffered common clock enable. The SN54 / 74LS378 is a 6-Bit Register with a buffered common enable. This device is similar to the SN54 / 74LS174, but with common Enable rather than common Master Reset. The SN54 / 74LS379 is a 4-Bit Register with buffered common Enable. This device is similar to the SN54 / 74LS175 but features the common Enable rather then common Master Reset. SN54/74LS377 SN54/74LS378 SN54/74LS379 OCTAL D FLIP-FLOP WITH ENABLE; HEX D FLIP-FLOP WITH ENABLE; 4-BIT D FLIP-FLOP WITH ENABLE LOW POWER SCHOTTKY • • • • • 8-Bit High Speed Parallel Registers Positive Edge-Triggered D-Type Flip Flops Fully Buffered Common Clock and Enable Inputs True and Complement Outputs Input Clamp Diodes Limit High Speed Termination Effects 20 1 J SUFFIX CERAMIC CASE 732-03 PIN NAMES LOADING (Note a) HIGH LOW 0.25 U.L. 0.25 U.L. 0.25 U.L. 5 (2.5) U.L. 5 (2.5) U.L. 20 1 N SUFFIX PLASTIC CASE 738-03 E D0 – D3 CP Q0 – Q3 Q0 – Q3 Enable (Active LOW) Input Data Inputs Clock (Active HIGH Going Edge) Input True Outputs (Note b) Complemented Outputs (Note b) 0.5 U.L. 0.5 U.L. 0.5 U.L. 10 U.L. 10 U.L. 20 1 DW SUFFIX SOIC CASE 751D-03 NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges. 16 1 J SUFFIX CERAMIC CASE 620-09 16 1 N SUFFIX PLASTIC CASE 648-08 16 1 D SUFFIX SOIC CASE 751B-03 ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXDW SN74LSXXXD Ceramic Plastic SOIC SOIC FAST AND LS TTL DATA 5-533 SN54/74LS377 • SN54/74LS378 • SN54/74LS379 CONNECTION DIAGRAM DIPS (TOP VIEW) SN54 / 74LS377 VCC 20 Q7 19 D7 18 D6 17 Q6 16 Q5 15 D5 14 D4 13 Q4 12 CP 11 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 1 E 2 Q0 3 D0 4 D1 5 Q1 6 Q2 7 D2 8 D3 9 Q3 10 GND SN54 / 74LS378 VCC 16 Q5 15 D5 14 D4 13 Q4 12 D3 11 Q3 10 CP 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 1 E 2 Q0 3 D0 4 D1 5 Q1 6 D2 7 Q2 8 GND SN54 / 74LS379 VCC 16 Q3 15 Q3 14 D3 13 D2 12 Q2 11 Q2 10 CP 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 1 E 2 Q0 3 Q0 4 D0 5 D1 6 Q1 7 Q1 8 GND FAST AND LS TTL DATA 5-534 SN54/74LS377 • SN54/74LS378 • SN54/74LS379 LOGIC DIAGRAMS SN54 / 74LS377 3 4 7 8 13 14 17 18 E ENABLE D0 1 D1 D2 D3 D4 D5 D6 D7 CP CLOCK 11 CP D Q CP D Q CP D Q CP D Q CP D Q CP D Q CP D Q CP D Q Q0 2 Q1 5 Q2 6 Q3 9 Q4 12 Q5 15 Q6 16 Q7 19 SN54 / 74LS378 3 4 6 11 13 14 D0 CP 9 D1 D2 D3 D4 D5 CP D E Q 1 CP D E Q CP D E Q CP D E Q CP D E Q CP D E Q E Q0 2 Q1 5 Q2 7 Q3 10 Q4 12 Q5 15 SN54 / 74LS379 4 5 12 13 D0 CP 9 D1 D2 D3 E 1 CP Q D Q E CP Q D Q E CP Q D Q E CP Q D Q E Q0 3 Q0 2 Q1 6 Q1 7 Q2 11 Q2 10 Q3 14 Q3 15 FAST AND LS TTL DATA 5-535 SN54/74LS377 • SN54/74LS378 • SN54/74LS379 GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current — High Output Current — Low Parameter 54 74 54 74 54, 74 54 74 Min 4.5 4.75 – 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70 – 0.4 4.0 8.0 Unit V °C mA mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54 74 54, 74 VOL Output LOW Voltage 74 Input HIGH Current Input LOW Current Short Circuit Current (Note 1) Power Supply Current LS377 LS378 LS379 – 20 0.35 0.5 20 0.1 – 0.4 – 100 28 22 15 V µA mA mA mA mA 2.5 2.7 54 74 – 0.65 3.5 3.5 0.25 0.4 Min 2.0 0.7 0.8 – 1.5 Typ Max Unit V V V V V V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN = – 18 mA VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table IOL = 4.0 mA IOL = 8.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table IIH IIL IOS ICC VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.4 V VCC = MAX VCC = MAX, NOTE 1 NOTE: With all inputs open and GND applied to all data and enable inputs, ICC is measured after a momentary GND, then 4.5 V is applied to clock. 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) Limits Symbol fMAX tPLH tPHL Parameter Maximum Clock Frequency Propagation Delay, Clock to Output Min 30 Typ 40 17 18 27 27 Max Unit MHz ns Test Conditions VCC = 5.0 V CL = 15 pF AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V) Limits Symbol tW ts ts th Parameter Any Pulse Width Data Setup Time Enable Setup Time Any Hold Time Inactive — State.


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