The 74LVC821A is a high performance, low power, low voltage Si-gate CMOS device and superior to most advanced CMOS compatible TTL families.
Inputs can be driven from either 3.3 V or 5 V devices. In 3-state operation, outputs can handle 5 V. This feature allows the use of these devices as translators in a mixed 3.3 V and 5 V environment.
The 74LVC821A is a 10-bit D-type flip-flop featuring separate D-type inputs for each flip-flop and 3-state outputs for bus-oriented applications. A clock input (pin CP) and an output enable input (pin OE) are common to all flip-flops. The ten flip-flops will store the state of their individual D-inputs that meet the set-up and hold times requirements on the LOW-to-HIGH CP transition. When pin OE is LOW, the contents of the ten flip-flops is available at the outputs.
When pin OE is HIGH, the outputs go to the high-impedance OFF-state. Operation of the OE inputs does not affect the state of the flip-flops.
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74LVC821ABQ | 9352 756 18118 | Volume production | SOT815-1
(DHVQFN24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC821ABQ
| ||
| 74LVC821AD | 74LVC821AD | 9352 625 36112 | Volume production | SOT137-1
(SO24) | Tube | Standard Marking | 74LVC821AD
| week 13, 2005 |
| 74LVC821AD | 74LVC821AD-T | 9352 625 36118 | Volume production | SOT137-1
(SO24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC821AD
| week 13, 2005 |
| 74LVC821ADB | 74LVC821ADB | 9352 625 37112 | Volume production | SOT340-1
(SSOP24) | Tube | Standard Marking | 74LVC821ADB
| week 12, 2005 |
| 74LVC821ADB | 74LVC821ADB-T | 9352 625 37118 | Volume production | SOT340-1
(SSOP24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC821ADB
| week 12, 2005 |
| 74LVC821APW | 74LVC821APW | 9352 625 38112 | Volume production | SOT355-1
(TSSOP24) | Tube | Standard Marking | 74LVC821APW
| week 10, 2005 |
| 74LVC821APW | 74LVC821APW-T | 9352 625 38118 | Volume production | SOT355-1
(TSSOP24) | Reel Pack, SMD, 13" | Standard Marking | 74LVC821APW
| week 10, 2005 |
Products in the above table are all in production. Some variants are discontinued; click here for information on these variants.
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74LVC821ABQ | 9352 756 18118 | Order samples | ||||||
| 74LVC821AD | 9352 625 36112 | 0.5600 | not available | |||||
| 74LVC821AD | 9352 625 36118 | 0.5600 | Order samples | |||||
| 74LVC821ADB | 9352 625 37112 | 0.5600 | not available | |||||
| 74LVC821ADB | 9352 625 37118 | 0.5600 | Order samples | |||||
| 74LVC821APW | 9352 625 38112 | 0.5600 | NA | ARROW ELECTRONICS | 876 | 8/27/2008 | Buy online | not available |
| 74LVC821APW | 9352 625 38118 | 0.5600 | Order samples |
Application Notes
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| 74LVC821ABQ | SOT815-1
(DHVQFN24) | 3.3V 10-Bit D-Type Flip-Flop; Positive-Edge Trigger (3-State) | 150 | 5.4 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC821AD | SOT137-1
(SO24) | 3.3V 10-Bit D-Type Flip-Flop; Positive-Edge Trigger (3-State) | 150 | 5.4 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC821ADB | SOT340-1
(SSOP24) | 3.3V 10-Bit D-Type Flip-Flop; Positive-Edge Trigger (3-State) | 150 | 5.4 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74LVC821APW | SOT355-1
(TSSOP24) | 3.3V 10-Bit D-Type Flip-Flop; Positive-Edge Trigger (3-State) | 150 | 5.4 @ 3.3V | 1.2-3.6 | Low Power or Battery Applications | TTL | +/- 24 mA |
74LVC821A links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.
The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.
As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.
The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-
If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.