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74ABT16821A, 74ABTH16821A
General description
The 74ABT16821A high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive.
The 74ABT16821A 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.
The 3-State output buffers are designed to drive heavily loaded 3-State buses, MOS memories, or MOS microprocessors.
The active-LOW Output Enable (nOE) controls all ten 3-State buffers independent of the register operation. 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, which means they will neither drive nor load the bus.
Two options are available, 74ABT16821A which does not have the bus-hold feature and 74ABTH16821A which incorporates the bus-hold feature.
Features
- 20-bit positive-edge triggered register
- Multiple VCC and GND pins minimize switching noise
- Live insertion/extraction permitted
- Power-up reset
- Power-up 3-State
- 74ABTH16821A incorporates bus-hold data inputs which eliminate the need for external pull-up resistors to hold unused inputs
- Output capability: +64 mA / ?32 mA
- Latch-up protection exceeds 500mA per JEDEC Std 17
- ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74ABT16821ADGG | 74ABT16821ADG | 9352 032 50112 | Volume production | SOT364-1
(TSSOP56) | Tube | Standard Marking | 74ABT16821ADGG
| week 2, 2006 |
| 74ABT16821ADGG | 74ABT16821ADG-T | 9352 032 50118 | Volume production | SOT364-1
(TSSOP56) | Reel Pack, SMD, 13" | Standard Marking | 74ABT16821ADGG
| week 2, 2006 |
| 74ABT16821ADL | 74ABT16821ADL | 9351 967 60512 | Volume production | SOT371-1
(SSOP56) | Tube Dry Pack | Standard Marking | 74ABT16821ADL
| week 13, 2005 |
| 74ABT16821ADL | 74ABT16821ADL-T | 9351 967 60518 | Volume production | SOT371-1
(SSOP56) | Reel Dry Pack, SMD, 13" | Standard Marking | 74ABT16821ADL
| week 13, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74ABT16821ADGG | 9352 032 50112 | 1.9200 | not available | |||||
| 74ABT16821ADGG | 9352 032 50118 | 1.9200 | Order samples | |||||
| 74ABT16821ADL | 9351 967 60512 | 1.9200 | not available | |||||
| 74ABT16821ADL | 9351 967 60518 | 1.9200 | Order samples |
Technical documents
Application Notes
AN203_2;
Test Fixtures for High Speed Logic (02-Apr-98)
Support Documents
Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| 74ABT16821ADGG | SOT364-1
(TSSOP56) | 20-Bit D-Type Flip-Flop; Positive-Edge Trigger (3-State) | 250 | 2.4 | 4.5-5.5 V | 56 | TTL | -32/+64 mA |
| 74ABT16821ADL | SOT371-1
(SSOP56) | 20-Bit D-Type Flip-Flop; Positive-Edge Trigger (3-State) | 250 | 2.4 | 4.5-5.5 V | 56 | TTL | -32/+64 mA |
Similar products
74ABT16821A, 74ABTH16821A 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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