X-On Electronics has gained recognition as a prominent supplier of 74HC191D,652 Counter ICs across the USA, India, Europe, Australia, and various other global locations. 74HC191D,652 Counter ICs are a product manufactured by Nexperia. We provide cost-effective solutions for Counter ICs, ensuring timely deliveries around the world.

74HC191D,652 Nexperia

74HC191D,652 electronic component of Nexperia
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Part No.74HC191D,652
Manufacturer: Nexperia
Category: Counter ICs
Description: Counter ICs SYNC BIN U/D COUNTER
Datasheet: 74HC191D,652 Datasheet (PDF)
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)
N/A

Obsolete
Availability Price Quantity
0
MOQ : 1
Multiples : 1
1 : USD 0.656
10 : USD 0.4803
100 : USD 0.4707
500 : USD 0.4707
1000 : USD 0.4526
N/A

Obsolete
0
MOQ : 50
Multiples : 50
50 : USD 0.2757
250 : USD 0.2472
1000 : USD 0.2377
2500 : USD 0.2281
6250 : USD 0.2281
N/A

Obsolete
0
MOQ : 1
Multiples : 1
1 : USD 0.5027
10 : USD 0.407
30 : USD 0.3657
100 : USD 0.2701
500 : USD 0.2477
1000 : USD 0.2345
N/A

Obsolete
0
MOQ : 1
Multiples : 1
1 : USD 1.2582
10 : USD 0.9011
100 : USD 0.6735
250 : USD 0.6331
500 : USD 0.5486
1000 : USD 0.4329
2500 : USD 0.399
N/A

Obsolete
0
MOQ : 34
Multiples : 1
34 : USD 0.4988
100 : USD 0.4707
N/A

Obsolete
0
MOQ : 50
Multiples : 50
50 : USD 0.2234
10000 : USD 0.2102
N/A

Obsolete
   
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RoHS - XON
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We are delighted to provide the 74HC191D,652 from our Counter ICs category, at competitive rates not only in the United States, Australia, and India, but also across Europe and beyond. A long established and extensive electronic component distribution network has enhanced our global reach and dependability, ensuring cost savings through prompt deliveries worldwide. Client satisfaction is at the heart of our business, where every component counts and every customer matters. Our technical service team is ready to assist you. From product selection to after-sales support, we strive to deliver a seamless and satisfying experience. Are you ready to experience the best in electronic component distribution? Contact X-ON Electronics today and discover why X-On are a preferred choice for the 74HC191D,652 and other electronic components in the Counter ICs category and beyond.

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This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges.
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74HC191 Presettable synchronous 4-bit binary up/down counter Rev. 6 8 September 2021 Product data sheet 1. General description The 74HC191 is an asynchronously presettable 4-bit binary up/down counter. It contains four master/slave flip-flops with internal gating and steering logic to provide asynchronous preset and synchronous count-up and count-down operation. Asynchronous parallel load capability permits the counter to be preset to any desired value. Information present on the parallel data inputs (D0 to D3) is loaded into the counter and appears on the outputs when the parallel load (PL) input is LOW. This operation overrides the counting function. Counting is inhibited by a HIGH level on the count enable (CE) input. When CE is LOW internal state changes are initiated synchronously by the LOW-to-HIGH transition of the clock input. The up/down (U/D) input signal determines the direction of counting as indicated in the function table. The CE input may go LOW when the clock is in either state, however, the LOW-to-HIGH CE transition must occur only when the clock is HIGH. Also, the U/D input should be changed only when either CE or CP is HIGH. Overflow/underflow indications are provided by two types of outputs, the terminal count (TC) and ripple clock (RC). The TC output is normally LOW and goes HIGH when a circuit reaches zero in the count-down mode or reaches 15 in the count-up-mode. The TC output will remain HIGH until a state change occurs, either by counting or presetting, or until U/D is changed. Do not use the TC output as a clock signal because it is subject to decoding spikes. The TC signal is used internally to enable the RC output. When TC is HIGH and CE is LOW, the RC output follows the clock pulse (CP). This feature simplifies the design of multistage counters as shown in Fig. 5 and Fig. 6. In Fig. 5, each RC output is used as the clock input to the next higher stage. It is only necessary to inhibit the first stage to prevent counting in all stages, since a HIGH on CE inhibits the RC output pulse. The timing skew between state changes in the first and last stages is represented by the cumulative delay of the clock as it ripples through the preceding stages. This can be a disadvantage of this configuration in some applications. Fig. 6 shows a method of causing state changes to occur simultaneously in all stages. The RC outputs propagate the carry/borrow signals in ripple fashion and all clock inputs are driven in parallel. In this configuration the duration of the clock LOW state must be long enough to allow the negative-going edge of the carry/borrow signal to ripple through to the last stage before the clock goes HIGH. Since the RC output of any package goes HIGH shortly after its CP input goes HIGH there is no such restriction on the HIGH-state duration of the clock. In Fig. 7, the configuration shown avoids ripple delays and their associated restrictions. Combining the TC signals from all the preceding stages forms the CE input for a given stage. An enable must be included in each carry gate in order to inhibit counting. The TC output of a given stage it not affected by its own CE signal therefore the simple inhibit scheme of Fig. 5 and Fig. 6 does not apply. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V . CC 2. Features and benefits Wide supply voltage range from 2.0 to 6.0 V CMOS low power dissipation High noise immunity Latch-up performance exceeds 100 mA per JESD 78 Class II Level B CMOS input levels Synchronous reversible counting Asynchronous parallel load Count enable control for synchronous expansion Single up/down control inputNexperia 74HC191 Presettable synchronous 4-bit binary up/down counter Complies with JEDEC standards: JESD8C (2.7 V to 3.6 V) JESD7A (2.0 V to 6.0 V) ESD protection: HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V Specified from -40 C to +85 C and -40 C to +125 C 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version 74HC191D -40 C to +125 C SO16 plastic small outline package 16 leads body width 3.9 mm SOT109-1 74HC191PW -40 C to +125 C TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm 4. Functional diagram 15 1 10 9 D0 D1 D2 D3 12 13 PL RC 11 13 TC RC U/D PARALLEL LOAD 5 15 D0 CIRCUIT 3 Q0 CE TC 4 12 1 D1 2 Q1 10 D2 6 Q2 D3 9 CP BINARY 7 14 Q3 COUNTER 11 PL U/D CE CP Q0 Q1 Q2 Q3 3 2 6 7 5 4 14 aaa-024376 aaa-024375 Fig. 1. Logic symbol Fig. 2. Functional diagram 74HC191 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2021. All rights reserved Product data sheet Rev. 6 8 September 2021 2 / 18

Tariff Desc

8542.39.23 No ..Linear/analogue and peripheral integrated circuits, timers, voltage regulators, A/D and D/A converters, telecommunication and modem integrated circuits, other than board level products Free

Electronic integrated circuits- Processors and controllers, whether or not combined with memories, converters, logic circuits, amplifiers, clock and timing circuits, or other circuits
NEXPERIA USA INC
Nexperia USA Inc.
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