Select site:
- English
74F166
Datasheet
General description
The 74F166 is a high speed 8?bit shift register that has fully synchronous serial parallel data entry selected by an active low parallel enable (PE) input. When the PE is low one setup time before the low?to?high clock transition, parallel data is entered into the register.
When PE is high, data is entered into internal bit position Q0 from serial data input (Ds), and the remaining bits are shifted one place to the right (Q0 ® Q1 ® Q2, etc.) with each positive going clock transition.
For expansion of the register in parallel to serial converters, the Q7 output is connected to the Ds input of the succeeding stage. The clock input is gated OR structure which allows one input to be used as an active?low clock enable (CE) input. The pin assignment for the CP and CE inputs is arbitrary and can be reversed for layout convenience. The low?to?high transition of CE input should only take place while the CP is high for predictable operation. A low on the master reset (MR) input overrides all other inputs and clears the register asynchronously, forcing all bit positions to a low state.
Features
- High impedance NPN base inputs for reduced loading (20µA in high and low states)
- Synchronous parallel to serial applications
- Synchronous serial data input for easy expansion
- Clock enable for ?do nothing? mode
- Asynchronous master reset
- Expandable to 16 bits in 8?bit increments
- Industrial temperature range available (?40°C to +85°C)
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| I74F166D | I74F166D | 9350 331 30602 | Volume production | SOT109-1
(SO16) | Tube (Signetics) | Standard Marking | I74F166D
| week 6, 2004 |
| I74F166D | I74F166D-T | 9350 331 30623 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | I74F166D
| week 6, 2004 |
| I74F166N | I74F166N | 9350 331 40602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking | I74F166N
| Always Pb-free |
| N74F166D | N74F166D | 9338 025 40602 | Volume production | SOT109-1
(SO16) | Tube (Signetics) | Standard Marking | N74F166D
| week 6, 2004 |
| N74F166D | N74F166D-T | 9338 025 40623 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F166D
| week 6, 2004 |
| N74F166N | N74F166N | 9337 947 60602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking | N74F166N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| I74F166D | 9350 331 30602 | not available | ||||||
| I74F166D | 9350 331 30623 | Order samples | ||||||
| I74F166N | 9350 331 40602 | Order samples | ||||||
| N74F166D | 9338 025 40602 | 3.1400 | NA | AVNET ELECTRONICS MARKETING | 500 | 9/5/2008 | Buy online | not available |
| NA | DIGI-KEY CORPORATION | 218 | 9/3/2008 | Buy online | ||||
| N74F166D | 9338 025 40623 | 3.1400 | Order samples | |||||
| N74F166N | 9337 947 60602 | 3.1400 | NA | DIGI-KEY CORPORATION | 345 | 9/3/2008 | Buy online | Order samples |
Technical documents
Application Notes
AN202_1;
Testing and specifying FAST logic (01-Jun-87)
AN203_2;
Test Fixtures for High Speed Logic (02-Apr-98)
AN216_2;
Arbitration in shared resource systems (18-Jul-88)
Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|
| I74F166D | SOT109-1
(SO16) | 8-Bit Bidirectional Universal Shift Register | 175 | 7.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| I74F166N | SOT38-4
(DIP16) | 8-Bit Bidirectional Universal Shift Register | 175 | 7.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F166D | SOT109-1
(SO16) | 8-Bit Bidirectional Universal Shift Register | 175 | 7.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F166N | SOT38-4
(DIP16) | 8-Bit Bidirectional Universal Shift Register | 175 | 7.5 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
Similar products
74F166 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.
Disclaimer
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.
- http://www.philips.semiconductors.com use http://www.nxp.com
- http://www.semiconductors.philips.com use http://www.nxp.com (Internet)
- sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)
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.