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Document overview
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Technical content
The SN54/74LS112A dual JK flip-flop features individual J, K, clock, and asynchronous set and clear inputs to each flip-flop. When the clock goes HIGH, the inputs are enabled and data will be accepted. The logic level of the J and K inputs may be allowed to change when the clock pulse is HIGH and the bistable will perform according to the truth table as long as minimum set-up and hold time are observed. Input data is transferred to the outputs on the negative-going edge of the clock pulse. LOGIC DIAGRAM (Each Flip-Flop) /C0081 /C0053/C0040/C0057/C0041 /C0067/C0076/C0069/C0065/C0082 /C0040/C0067/C0068/C0041 /C0049/C0053/C0040/C0049/C0052/C0041 /C0074 /C0051/C0040/C0049/C0049/C0041 /C0081 /C0054/C0040/C0055/C0041 /C0083/C0069/C0084 /C0040/C0083/C0068/C0041 /C0052/C0040/C0049/C0048/C0041 /C0075 /C0050/C0040/C0049/C0050/C0041 /C0049/C0040/C0049/C0051/C0041 /C0067/C0076/C0079/C0067/C0075 /C0040/C0067/C0080/C0041 MODE SELECT — TRUTH TABLE OPERATING MODE INPUTS OUTPUTS OPERATING MODE SD C D J K Q Q Set Reset (Clear) *Undetermined Toggle Load “0” (Reset) Load “1” (Set) Hold L H L H H H H H L L H H H H X X X h l h l X X X h h l l H L H q L H q L H H q H L q * Both outputs will be HIGH while both SD and CD are LOW, but the output states are unpredictable if SD and CD go HIGH simultaneously . H, h = HIGH Voltage Level L, I = LOW Voltage Level X = Don’t Care l, h (q) = Lower case letters indicate the state of the referenced input (or output) l, h (q) = one set-up time prior to the HIGH to LOW clock transition. SN54/74LS112A DUAL JK NEGATIVE EDGE-TRIGGERED FLIP-FLOP LOW POWER SCHOTTKY J SUFFIX CERAMIC CASE 620-09 N SUFFIX PLASTIC CASE 648-08
ORDERING INFORMATION
/C0086/C0067/C0067 /C0061 /C0080/C0073/C0078 /C0049/C0054 /C0071/C0078/C0068 /C0061 /C0080/C0073/C0078 /C0056 /C0052 /C0051 /C0049 /C0050 /C0049/C0053 /C0053 /C0054 /C0083/C0068/C0074 /C0067/C0080 /C0075/C0067/C0068/C0081 /C0081 /C0049/C0048 /C0049/C0049 /C0057 /C0049/C0051 /C0049/C0050 /C0049/C0052 /C0055 /C0083/C0068/C0074 /C0067/C0080 /C0075/C0067/C0068/C0081 /C0081
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 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 J, K Set, Clear Clock µA VCC = MAX, VIN = 2.7 V IIH Input HIGH Current J, K Set, Clear Clock 0.1 0.3 0.4 mA VCC = MAX, VIN = 7.0 V IIL Input LOW Current J, K Clear, Set, Clk –0.4 –0.8 mA VCC = MAX, VIN = 0.4 V IOS Short Circuit Current (Note 1) –20 –100 mA VCC = MAX ICC Power Supply Current 6.0 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 Clock Frequency 30 45 MHz VCC = 5.0 V C L = 15 pFtPLH tPHL Propagation Delay, Clock Clear, Set to Output 15 20 ns VCC = 5.0 V C L = 15 pFtPLH tPHL Propagation Delay, Clock Clear, Set to Output 15 20 ns C L = 15 pF AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V) Symbol Parameter Limits Unit Test ConditionsSymbol Parameter Min Typ Max Unit Test Conditions tW Clock Pulse Width High 20 ns VCC = 5.0 V tW Clear, Set Pulse Width 25 ns VCC = 5.0 V ts Setup Time 20 ns VCC = 5.0 V th Hold Time 0 ns
/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 /C0057/C0046/C0056/C0048 /C0051/C0046/C0056/C0048 /C0049/C0046/C0051/C0053 /C0048/C0046/C0051/C0053 /C0048/C0046/C0052/C0048 /C0048/C0046/C0049/C0057 /C0048/C0046/C0049/C0048 /C0048°/C0258 /C0053/C0046/C0056/C0048 /C0048/C0046/C0050/C0053 /C0049/C0048/C0046/C0048/C0048 /C0052/C0046/C0048/C0048 /C0049/C0046/C0055/C0053 /C0048/C0046/C0052/C0057 /C0049/C0046/C0050/C0053 /C0048/C0046/C0050/C0053 /C0048/C0046/C0050/C0053 /C0055°/C0258 /C0054/C0046/C0050/C0048 /C0048/C0046/C0053/C0048 /C0048/C0046/C0051/C0056/C0054 /C0048/C0046/C0049/C0053/C0048 /C0048/C0046/C0048/C0053/C0052 /C0048/C0046/C0048/C0049/C0052 /C0048/C0046/C0048/C0049/C0054 /C0048/C0046/C0048/C0048/C0056 /C0048/C0046/C0048/C0048/C0052 /C0048°/C0258 /C0048/C0046/C0050/C0050/C0057 /C0048/C0046/C0048/C0049/C0048 /C0048/C0046/C0051/C0057/C0051 /C0048/C0046/C0049/C0053/C0055 /C0048/C0046/C0048/C0054/C0056 /C0048/C0046/C0048/C0049/C0057 /C0048/C0046/C0048/C0052/C0057 /C0048/C0046/C0048/C0048/C0057 /C0048/C0046/C0048/C0048/C0057 /C0055°/C0258 /C0048/C0046/C0050/C0052/C0052 /C0048/C0046/C0048/C0049/C0057 /C0049/C0046/C0050/C0055 /C0066/C0083/C0067 /C0048/C0046/C0048/C0053/C0048 /C0066/C0083/C0067 /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/C0066/C0262/C0048/C0049 /C0073/C0083 /C0079/C0066/C0083/C0079/C0076/C0069/C0084/C0069/C0044 /C0078/C0069/C0087 /C0083/C0084/C0065/C0078/C0068/C0065/C0082/C0068 /C0055/C0053/C0049/C0066/C0262/C0048/C0051/C0046 1 8 916 -A- -B- P /C0049/C0054 /C0080/C0076D -T- K CG M R X 45° F J /C0056 /C0080/C0076 /C0083/C0069/C0065/C0084/C0073/C0078/C0071 /C0080/C0076/C0065/C0078/C0069 Case 751B-03 D Suffix 16-Pin Plastic SO-16 /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 648-08 N Suffix 16-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 /C0065 /C0066 /C0067 /C0068 /C0070 /C0071 /C0072 /C0074 /C0075 /C0076 /C0077 /C0083 /C0049/C0056/C0046/C0056/C0048 /C0054/C0046/C0051/C0053 /C0051/C0046/C0054/C0057 /C0048/C0046/C0051/C0057 /C0049/C0046/C0048/C0050 /C0048/C0046/C0050/C0049 /C0050/C0046/C0056/C0048 /C0055/C0046/C0053/C0048 /C0048° /C0048/C0046/C0053/C0049 /C0049/C0057/C0046/C0053/C0053 /C0054/C0046/C0056/C0053 /C0052/C0046/C0052/C0052 /C0048/C0046/C0053/C0051 /C0049/C0046/C0055/C0055 /C0048/C0046/C0051/C0056 /C0051/C0046/C0051/C0048 /C0055/C0046/C0055/C0052 /C0049/C0048° /C0049/C0046/C0048/C0049 /C0048/C0046/C0055/C0052/C0048 /C0048/C0046/C0050/C0053/C0048 /C0048/C0046/C0049/C0052/C0053 /C0048/C0046/C0048/C0049/C0053 /C0048/C0046/C0048/C0052/C0048 /C0048/C0046/C0048/C0048/C0056 /C0048/C0046/C0049/C0049/C0048 /C0048/C0046/C0050/C0057/C0053 /C0048° /C0048/C0046/C0048/C0050/C0048 /C0048/C0046/C0055/C0055/C0048 /C0048/C0046/C0050/C0055/C0048 /C0048/C0046/C0049/C0055/C0053 /C0048/C0046/C0048/C0050/C0049 /C0048/C0046/C0048/C0055/C0048 /C0048/C0046/C0048/C0049/C0053 /C0048/C0046/C0049/C0051/C0048 /C0048/C0046/C0051/C0048/C0053 /C0049/C0048° /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/C0083 /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 /C0082/C0079/C0085/C0078/C0068/C0069/C0068 /C0067/C0079/C0082/C0078/C0069/C0082/C0083 /C0079/C0080/C0084/C0073/C0079/C0078/C0065/C0076/C0046 /C0054/C0046 /C0054/C0052/C0056/C0262/C0048/C0049 /C0084/C0072/C0082/C0085 /C0262/C0048/C0055 /C0079/C0066/C0083/C0079/C0076/C0069/C0084/C0069/C0044 /C0078/C0069/C0087 /C0083/C0084/C0065/C0078/C0068/C0065/C0082/C0068 /C0054/C0052/C0056/C0262/C0048/C0056/C0046 /C0050/C0046/C0053/C0052 /C0066/C0083/C0067 /C0049/C0046/C0050/C0055 /C0066/C0083/C0067 /C0048/C0046/C0049/C0048/C0048 /C0066/C0083/C0067 /C0048/C0046/C0048/C0053/C0048 /C0066/C0083/C0067 -A- B 1 8 916 F H G D /C0049/C0054 /C0080/C0076 S C -T- /C0083/C0069/C0065/C0084/C0073/C0078/C0071 /C0080/C0076/C0065/C0078/C0069 K J M L /C0084 /C0065/C0048/C0046/C0050/C0053 /C0040/C0048/C0046/C0048/C0049/C0048/C0041/C0077 /C0077 Case 620-09 J Suffix 16-Pin Ceramic Dual In-Line /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 /C0049/C0057/C0046/C0048/C0053 /C0054/C0046/C0049/C0048 /C0266 /C0048/C0046/C0051/C0057 /C0049/C0046/C0052/C0048 /C0048/C0046/C0050/C0051 /C0266 /C0048° /C0048/C0046/C0051/C0057 /C0049/C0057/C0046/C0053/C0053 /C0055/C0046/C0051/C0054 /C0052/C0046/C0049/C0057 /C0048/C0046/C0053/C0051 /C0049/C0046/C0055/C0055 /C0048/C0046/C0050/C0055 /C0053/C0046/C0048/C0056 /C0049/C0053° /C0048/C0046/C0056/C0056 /C0048/C0046/C0055/C0053/C0048 /C0048/C0046/C0050/C0052/C0048 /C0266 /C0048/C0046/C0048/C0049/C0053 /C0048/C0046/C0048/C0053/C0053 /C0048/C0046/C0048/C0048/C0057 /C0266 /C0048° /C0048/C0046/C0048/C0049/C0053 /C0048/C0046/C0055/C0055/C0048 /C0048/C0046/C0050/C0057/C0048 /C0048/C0046/C0049/C0054/C0053 /C0048/C0046/C0048/C0050/C0049 /C0048/C0046/C0048/C0055/C0048 /C0048/C0046/C0048/C0049/C0049 /C0048/C0046/C0050/C0048/C0048 /C0049/C0053° /C0048/C0046/C0048/C0051/C0053 /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 /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 /C0076 /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 /C0070 /C0077/C0065/C0089 /C0078/C0065/C0082/C0082/C0079/C0087 /C0084/C0079 /C0048/C0046/C0055/C0054 /C0040/C0048/C0046/C0048/C0051/C0048/C0041 /C0087/C0072/C0069/C0082/C0069 /C0084/C0072/C0069 /C0076/C0069/C0065/C0068 /C0069/C0078/C0084/C0069/C0082/C0083 /C0084/C0072/C0069 /C0067/C0069/C0082/C0065/C0077/C0073/C0067 /C0066/C0079/C0068/C0089/C0046 /C0053/C0046 /C0054/C0050/C0048/C0262/C0048/C0049 /C0084/C0072/C0082/C0085 /C0262/C0048/C0056 /C0079/C0066/C0083/C0079/C0076/C0069/C0084/C0069/C0044 /C0078/C0069/C0087 /C0083/C0084/C0065/C0078/C0068/C0065/C0082/C0068 /C0054/C0050/C0048/C0262/C0048/C0057/C0046 -B- -A- /C0049/C0054 /C0080/C0076 -T- C D E F G J K MN /C0083/C0069/C0065/C0084/C0073/C0078/C0071 /C0080/C0076/C0065/C0078/C0069 /C0049/C0054 /C0080/C0076 L 16 9 1 8 /C0048/C0046/C0050/C0053 /C0040/C0048/C0046/C0048/C0049/C0048/C0041 /C0084 /C0065/C0077 /C0083 /C0048/C0046/C0050/C0053 /C0040/C0048/C0046/C0048/C0049/C0048/C0041 /C0084 /C0066/C0077 /C0083
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