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74ALVCH16821
General description
The 74ALVCH16821 has two 10-bit, edge triggered registers, with each register coupled to a 3-State output buffer. The two sections of each register are controlled independently by the clock (nCP) and Output Enable (nOE) control gates.
Each register is fully edge triggered. The state of each D input, one set-up time before the Low-to-High clock transition, is transferred to the corresponding flip-flop?s Q output.
When nOE is LOW, the data in the register appears at the outputs. When nOE is HIGH, the outputs are in high impedance OFF state.
Operation of the nOE input does not affect the state of the flip-flops. The 74ALVCH16821 has active bus hold circuitry which is provided to hold unused or floating data inputs at a valid logic level. This feature eliminates the need for external pull-up or pull-down resistors.
Features
- Wide supply voltage range of 1.2V to 3.6V
- Complies with JEDEC standard no. 8-1A
- Current drive ? 24 mA at 3.0 V
- CMOS low power consumption
- Direct interface with TTL levels
- MULTIBYTE TM flow-through standard pin-out architecture
- Low inductance multiple VCC and ground pins for minimum noise and ground bounce
- All data inputs have bus hold
- Output drive capability 50 Ohm transmission lines @ 85°C
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74ALVCH16821DGG | 74ALVCH16821DG | 9352 590 10112 | Volume production | SOT364-1
(TSSOP56) | Tube | Standard Marking | 74ALVCH16821DGG
| week 2, 2006 |
| 74ALVCH16821DGG | 74ALVCH16821DG-T | 9352 590 10118 | Volume production | SOT364-1
(TSSOP56) | Reel Pack, SMD, 13" | Standard Marking | 74ALVCH16821DGG
| week 2, 2006 |
| 74ALVCH16821DL | 74ALVCH16821DL | 9352 590 00512 | Volume production | SOT371-1
(SSOP56) | Tube Dry Pack | Standard Marking | 74ALVCH16821DL
| week 13, 2005 |
| 74ALVCH16821DL | 74ALVCH16821DL-T | 9352 590 00518 | Volume production | SOT371-1
(SSOP56) | Reel Dry Pack, SMD, 13" | Standard Marking | 74ALVCH16821DL
| week 13, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74ALVCH16821DGG | 9352 590 10112 | 1.4900 | NA | AVNET ELECTRONICS MARKETING | 1,248 | 10/13/2008 | Buy online | not available |
| 74ALVCH16821DGG | 9352 590 10118 | 1.4900 | Order samples | |||||
| 74ALVCH16821DL | 9352 590 00512 | 1.4900 | not available | |||||
| 74ALVCH16821DL | 9352 590 00518 | 1.4900 | Order samples |
Technical documents
Application Notes
Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|---|
| 74ALVCH16821DGG | SOT364-1
(TSSOP56) | 2.5/3.3V 20-Bit D-Type Flip-Flop; Positive-Edge Trigger with Bus Hold (3-State) | 350 | 2.5@3.3V | 2.3-3.6 | 56 | Low Power or Battery Applications | TTL | +/- 24 mA |
| 74ALVCH16821DL | SOT371-1
(SSOP56) | 2.5/3.3V 20-Bit D-Type Flip-Flop; Positive-Edge Trigger with Bus Hold (3-State) | 350 | 2.5@3.3V | 2.3-3.6 | 56 | Low Power or Battery Applications | TTL | +/- 24 mA |
Similar products
74ALVCH16821 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.
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