Logic - Flip Flops

Category Introduction

Flip-flops are elementary digital memory devices capable of storing a single logic state or "bit" of information. They have at least two inputs; one or more to communicate the data to be stored and another to indicate the point in time to store it. Different flip-flop types such as D (delay), SR (Set-Reset), and JK respond differently to the signals presented to their inputs and can be used to implement different logical functions. They differ from latches in that they are edge sensitive devices, whose retained logic state changes only at the moment a valid clock signal is received.

Product List

6023 Items

PDF	Mfr Part #	Quantity Available	UnitPrice	RFQ	Series	Packaging	Product Status	Function	Type	Output Type	Number of Elements	Number of Bits per Element	Clock Frequency	Max Propagation Delay @ V, Max CL	Trigger Type	Current - Output High, Low	Voltage - Supply	Current - Quiescent (Iq)	Input Capacitance	Operating Temperature	Mounting Type	Supplier Device Package	Package / Case
	54LS174LMQB D FLIP-FLOP, LS SERIES National Semiconductor	692	$1.41			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	5474FM D FLIP-FLOP, TTL National Semiconductor	282	$1.41			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	74VCX16821MTDX IC FF D-TYPE DUAL 10BIT 56TSSOP Fairchild Semiconductor	500	$1.42		74VCX	Bulk	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	2	10	250 MHz	3.5ns @ 3.3V, 30pF	Positive Edge	24mA, 24mA	1.4V ~ 3.6V	20 µA	6 pF	-40°C ~ 85°C (TA)	Surface Mount	56-TSSOP	56-TFSOP (0.240", 6.10mm Width)
	74ACTQ374SJX IC FF D-TYPE SNGL 8BIT 20SOP Fairchild Semiconductor	139	$1.43		74ACTQ	Bulk	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	1	8	85 MHz	9ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOP	20-SOIC (0.209", 5.30mm Width)
	74ACTQ273SJX IC FF D-TYPE SNGL 8BIT 20SOP Fairchild Semiconductor	173	$1.42		74ACTQ	Bulk	Obsolete	Master Reset	D-Type	Non-Inverted	1	8	189 MHz	8.5ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOP	20-SOIC (0.209", 5.30mm Width)
	54LS175FMQB D FLIP-FLOP, TTL National Semiconductor	660	$1.45			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	MM54HC174J D FLIP-FLOP, HC/UH SERIES, 6-BIT National Semiconductor	96	$1.44			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	NTE74HC273 IC FF D-TYPE SNGL 8BIT 20DIP NTE Electronics, Inc	645	$1.47		74HC	Bag	Active	Master Reset	D-Type	Non-Inverted	1	8	35 MHz	26ns @ 6V, 50pF	Positive Edge	7.8mA, 7.8mA	2V ~ 6V	8 µA	10 pF	-40°C ~ 85°C (TA)	Through Hole	20-DIP	20-DIP (0.300", 7.62mm)
	CD74FCT574CTQM FAST OCTAL D REGISTER Harris Corporation	563	$1.45			Bulk	Active	Standard	D-Type	Tri-State, Non-Inverted	1	8	70 MHz	6.6ns @ 5V, 50pF	Positive Edge	15mA, 48mA	4.75V ~ 5.25V	8 µA	10 pF	0°C ~ 70°C (TA)	Surface Mount	20-QSOP	20-SSOP (0.154", 3.90mm Width)
	74LCX16821MTD IC FF D-TYPE DUAL 10BIT 56TSSOP Fairchild Semiconductor	219	$1.48		74LCX	Tube	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	2	10	150 MHz	6.2ns @ 3.3V, 50pF	Positive Edge	24mA, 24mA	2V ~ 3.6V	20 µA	7 pF	-40°C ~ 85°C (TA)	Surface Mount	56-TSSOP	56-TFSOP (0.240", 6.10mm Width)
	54LS173DM JBAR-KBAR FLIP-FLOP, 4 FUNC, POS National Semiconductor	453	$1.48			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	74ACTQ273SJ IC FF D-TYPE SNGL 8BIT 20SOP Fairchild Semiconductor	605	$1.50		74ACTQ	Tube	Obsolete	Master Reset	D-Type	Non-Inverted	1	8	189 MHz	8.5ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOP	20-SOIC (0.209", 5.30mm Width)
	74ACTQ574SJ IC FF D-TYPE SNGL 8BIT 20SOP Fairchild Semiconductor	370	$1.53		74ACTQ	Tube	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	1	8	85 MHz	9ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOP	20-SOIC (0.209", 5.30mm Width)
	74ACTQ374SJ IC FF D-TYPE SNGL 8BIT 20SOP Fairchild Semiconductor	276	$1.54		74ACTQ	Tube	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	1	8	85 MHz	9ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOP	20-SOIC (0.209", 5.30mm Width)
	74ACTQ574SCX IC FF D-TYPE SNGL 8BIT 20SOIC Fairchild Semiconductor	601	$1.54		74ACTQ	Bulk	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	1	8	85 MHz	9ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOIC	20-SOIC (0.295", 7.50mm Width)
	74ACTQ374SC IC FF D-TYPE SNGL 8BIT 20SOIC Fairchild Semiconductor	479	$1.52		74ACTQ	Tube	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	1	8	85 MHz	9ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOIC	20-SOIC (0.295", 7.50mm Width)
	74ACTQ273SC IC FF D-TYPE SNGL 8BIT 20SOIC Fairchild Semiconductor	436	$1.53		74ACTQ	Tube	Obsolete	Master Reset	D-Type	Non-Inverted	1	8	189 MHz	8.5ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-SOIC	20-SOIC (0.295", 7.50mm Width)
	54LS173FMQB D FLIP-FLOP, LS SERIES National Semiconductor	65	$1.50			Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	74ACTQ374QSCX IC FF D-TYPE SNGL 8BIT 20QSOP Fairchild Semiconductor	548	$1.54		74ACTQ	Bulk	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	1	8	85 MHz	9ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-QSOP	20-LSSOP (0.154", 3.90mm Width)
	74ACTQ374QSC IC FF D-TYPE SNGL 8BIT 20QSOP Fairchild Semiconductor	69	$1.53		74ACTQ	Tube	Obsolete	Standard	D-Type	Tri-State, Non-Inverted	1	8	85 MHz	9ns @ 5V, 50pF	Positive Edge	24mA, 24mA	4.5V ~ 5.5V	40 µA	4.5 pF	-40°C ~ 85°C (TA)	Surface Mount	20-QSOP	20-LSSOP (0.154", 3.90mm Width)