Select site:
- English
74F157A; 74F158A
General description
The 74F157A is a high speed Quad 2-Input Multiplexer which selects 4 bits of data from one of two sources under the control of a common Select input (S). The Enable input (E) is active when Low. When E is High, all of the outputs (Yn) are forced Low regardless of all other input conditions.
Moving data from two registers to a common output bus is a common use of the 74F157A. The state of the Select input determines the particular register from which the data comes.
The device is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the Select input.
The 74F158A is similar, but has inverting outputs (Yn).
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| I74F157AD | I74F157AD | 9352 077 20112 | Volume production | SOT109-1
(SO16) | Tube | Standard Marking | I74F157AD
| week 6, 2004 |
| I74F157AD | I74F157AD-T | 9352 077 20118 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" | Standard Marking | I74F157AD
| week 6, 2004 |
| I74F157AN | I74F157AN | 9352 077 30112 | Volume production | SOT38-4
(DIP16) | Tube | Standard Marking | I74F157AN
| Always Pb-free |
| N74F157AD | N74F157AD | 9338 125 70602 | Volume production | SOT109-1
(SO16) | Tube (Signetics) | Standard Marking | N74F157AD
| week 6, 2004 |
| N74F157AD | N74F157AD-T | 9338 125 70623 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F157AD
| week 6, 2004 |
| N74F157AN | N74F157AN | 9338 125 60602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking | N74F157AN
| Always Pb-free |
| N74F158AD | N74F158AD | 9338 125 90602 | Volume production | SOT109-1
(SO16) | Tube (Signetics) | Standard Marking | N74F158AD
| week 6, 2004 |
| N74F158AD | N74F158AD-T | 9338 125 90623 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F158AD
| week 6, 2004 |
| N74F158AN | N74F158AN | 9338 125 80602 | Volume production | SOT38-4
(DIP16) | Tube (Signetics) | Standard Marking | N74F158AN
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| I74F157AD | 9352 077 20112 | Order samples | ||||||
| I74F157AD | 9352 077 20118 | Order samples | ||||||
| I74F157AN | 9352 077 30112 | Order samples | ||||||
| N74F157AD | 9338 125 70602 | 0.2300 | NA | ARROW ELECTRONICS | 2,485 | 7/4/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 293 | 6/29/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 210 | 7/4/2008 | Buy online | ||||
| N74F157AD | 9338 125 70623 | 0.2300 | Order samples | |||||
| N74F157AN | 9338 125 60602 | 0.3400 | Order samples | |||||
| N74F158AD | 9338 125 90602 | 0.2700 | not available | |||||
| N74F158AD | 9338 125 90623 | 0.2700 | Order samples | |||||
| N74F158AN | 9338 125 80602 | 0.3400 | 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 | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| I74F157AD | SOT109-1
(SO16) | Quad 2-Input Multiplexer; Non-Inverting | 4.6 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| I74F157AN | SOT38-4
(DIP16) | Quad 2-Input Multiplexer; Non-Inverting | 4.6 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F157AD | SOT109-1
(SO16) | Quad 2-Input Multiplexer; Non-Inverting | 4.6 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F157AN | SOT38-4
(DIP16) | Quad 2-Input Multiplexer; Non-Inverting | 4.6 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F158AD | SOT109-1
(SO16) | Quad 2-Input Multiplexer; Inverting | 3.7 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
| N74F158AN | SOT38-4
(DIP16) | Quad 2-Input Multiplexer; Inverting | 3.7 | 4.5-5.5 V | 16 | TTL | -1/+20 mA |
Similar products
74F157A; 74F158A 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.