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SCC2691

Selection guide

Datasheet

SCC2691
(Product Specification)
04-Aug-06, 25 pages, 184 kB

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General description

The Philips Semiconductors SCC2691 Universal Asynchronous Receiver/Transmitter (UART) is a single-chip CMOS-LSI communications device that provides a full-duplex asynchronous receiver/transmitter. It is fabricated with Philips Semiconductors CMOS technology which combines the benefits of high density and low power consumption.

The operating speed of the receiver and transmitter can be selected independently as one of 18 fixed baud rates, a 16X clock derived from a programmable counter/timer, or an external 1X or 16X clock. The baud rate generator and counter/timer can operate directly from a crystal or from external clock inputs. The ability to independently program the operating speed of the receiver and transmitter make the UART particularly attractive for dual-speed channel applications such as clustered terminal systems.

The receiver is quadruple buffered to minimize the potential of receiver overrun or to reduce interrupt overhead in interrupt driven systems. In addition, a handshaking capability is provided to disable a remote UART transmitter when the receiver buffer is full.

The UART provides a power-down mode in which the oscillator is frozen but the register contents are stored. This results in reduced power consumption on the order of several magnitudes.

The UART is fully TTL compatible and operates from a single +5V power supply.

Features

  • Full-duplex asynchronous receiver/transmitter
  • Quadruple buffered receiver data register
  • Programmable data format:
    • 5 to 8 data bits plus parity
    • Odd, even, no parity or force parity
    • 1, 1.5 or 2 stop bits programmable in 1/16-bit increments
  • 16-bit programmable Counter/Timer
  • Baud rate for the receiver and transmitter selectable from:
    • 22 fixed rates: 50 to 115.2K baud
    • Non-standard rates to 115.2 kb
    • Non-standard user-defined rate derived from programmable timer/ counter
    • External 1X or 16X clock
  • Parity, framing, and overrun detection
  • False start bit detection
  • Line break detection and generation
  • Programmable channel mode
    • Normal (full-duplex)
    • Automatic echo
    • Local loopback
    • Remote Loopback
  • Multi-function programmable 16-bit counter/timer
  • Single interrupt output with seven maskable interrupting conditions
  • On-chip crystal oscillator
  • Low power mode
  • TTL compatible
  • Single +5V power supply
  • Commercial (0 Cel to +70 Cel) and industrial (-40 Cel to +85 Cel) temperature versions available
  • SOL, PLCC and 300 mil wide DIP packages available

Products/packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
SCC2691AC1A28SCC2691AC1A28,1299338 115 50129Volume productionSOT261-2
(PLCC28)
SCC2691AC1A28SCC2691AC1A28,6029338 115 50602Volume productionSOT261-2
(PLCC28)
Tube (Signetics)Standard Marking
SCC2691AC1A28SCC2691AC1A28,6239338 115 50623Volume productionSOT261-2
(PLCC28)
Reel Pack, SMD, 13" (Signetics)Standard Marking
SCC2691AC1A28/GSCC2691AC1A28/G,119352 789 13118Volume productionSOT261-2
(PLCC28)
Reel Pack, SMD, 13"Standard Marking
SCC2691AC1A28/NSCC2691AC1A28/N,119352 785 13112DevelopmentSOT261-2
(PLCC28)
TubeStandard Marking
SCC2691AC1D24SCC2691AC1D24,5129350 027 30512Volume productionSOT137Tube Dry PackStandard Marking
SCC2691AC1D24SCC2691AC1D24,5299350 027 30529Volume productionSOT137
SCC2691AC1D24SCC2691AC1D24,5189350 027 30518Volume productionSOT137Reel Dry Pack, SMD, 13"Standard Marking
SCC2691AC1D24/N-9352 785 14118Samples availableSOT137Reel Pack, SMD, 13"Standard Marking
SCC2691AC1D24/NSCC2691AC1D24/N,519352 785 14518Volume productionSOT137Reel Dry Pack, SMD, 13"Standard Marking
SCC2691AC1N24SCC2691AC1N24,1299338 115 40129Volume productionSOT222-1
(DIP24)
SCC2691AC1N24SCC2691AC1N24,6029338 115 40602Volume productionSOT222-1
(DIP24)
Tube (Signetics)Standard Marking
SCC2691AE1A28SCC2691AE1A28,1299350 269 70129Volume productionSOT261-2
(PLCC28)
SCC2691AE1A28SCC2691AE1A28,6029350 269 70602Volume productionSOT261-2
(PLCC28)
Tube (Signetics)Standard Marking
SCC2691AE1A28SCC2691AE1A28,6239350 269 70623Volume productionSOT261-2
(PLCC28)
Reel Pack, SMD, 13" (Signetics)Standard Marking
SCC2691AE1N24SCC2691AE1N24,1299350 269 90129Volume productionSOT222-1
(DIP24)
SCC2691AE1N24SCC2691AE1N24,6029350 269 90602Volume productionSOT222-1
(DIP24)
Tube (Signetics)Standard Marking

The variants in the table below are discontinued. See the table Discontinued information for more information.

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
SCC2691AC1A28/NSCC2691AC1A28/N:119352 785 13118Withdrawn
Replacement product
SOT261-2
(PLCC28)
Reel Pack, SMD, 13"Standard Marking

Quality/reliability/chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree Conversion dateRHFIRF (FIT)MTBF (hours)MSL
SCC2691AC1A28SCC2691AC1A28,129SCC2691AC1A28
Always Pb-free
SCC2691AC1A28SCC2691AC1A28,602SCC2691AC1A28
week 12, 2005
SCC2691AC1A28SCC2691AC1A28,623SCC2691AC1A28
week 12, 2005
SCC2691AC1A28/GSCC2691AC1A28/G,11SCC2691AC1A28_G
Always Pb-free
SCC2691AC1A28/NSCC2691AC1A28/N,11Not available
SCC2691AC1D24SCC2691AC1D24,512SCC2691AC1D24
week 11, 2005
SCC2691AC1D24SCC2691AC1D24,529SCC2691AC1D24
week 11, 2005
SCC2691AC1D24SCC2691AC1D24,518SCC2691AC1D24
week 11, 2005
SCC2691AC1D24/N-SCC2691AC1D24_N
SCC2691AC1D24/NSCC2691AC1D24/N,51SCC2691AC1D24_N
SCC2691AC1N24SCC2691AC1N24,129SCC2691AC1N24
week 8, 2005
SCC2691AC1N24SCC2691AC1N24,602SCC2691AC1N24
week 8, 2005
SCC2691AE1A28SCC2691AE1A28,129SCC2691AE1A28
week 8, 2005
SCC2691AE1A28SCC2691AE1A28,602SCC2691AE1A28
week 8, 2005
SCC2691AE1A28SCC2691AE1A28,623SCC2691AE1A28
week 8, 2005
SCC2691AE1N24SCC2691AE1N24,129SCC2691AE1N24
week 12, 2005
SCC2691AE1N24SCC2691AE1N24,602SCC2691AE1N24
week 12, 2005

The variants in the table below are discontinued. See the table Discontinued information for more information.

Type numberOrderable part numberChemical contentRoHSLeadfree Conversion dateRHFIRF (FIT)MTBF (hours)MSL
SCC2691AC1A28/NSCC2691AC1A28/N:11Not available

Quality and reliability disclaimer

Pricing/ordering/availability

Type numberOrdering code(12NC)Orderable part numberIndicative price/unit($)RegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
SCC2691AC1A289338 115 50129  SCC2691AC1A28,129  NANEWARK2,017 11/20/2009Buy onlineOrder samples
SCC2691AC1A289338 115 50602  SCC2691AC1A28,602  4.5500NANEWARK2,017 11/20/2009Buy onlinenot available
    NADIGI-KEY CORPORATION1,509 11/20/2009Buy online 
    NAFUTURE ELECTRONICS573 11/19/2009Buy online 
SCC2691AC1A289338 115 50623  SCC2691AC1A28,623  4.5500NANEWARK2,017 11/20/2009Buy onlinenot available
    NAFUTURE ELECTRONICS750 11/19/2009Buy online 
SCC2691AC1A28/G9352 789 13118  SCC2691AC1A28/G,11        Order samples
SCC2691AC1A28/N9352 785 13112  SCC2691AC1A28/N,11        not available
SCC2691AC1D249350 027 30512  SCC2691AC1D24,512  4.5500NAARROW ELECTRONICS655 11/19/2009Buy onlinenot available
    NADIGI-KEY CORPORATION85 11/20/2009Buy online 
    NAFUTURE ELECTRONICS1,026 11/19/2009Buy online 
    NAAVNET ELECTRONICS MARKETING678 11/19/2009Buy online 
SCC2691AC1D249350 027 30529  SCC2691AC1D24,529  NAARROW ELECTRONICS655 11/19/2009Buy onlinenot available
SCC2691AC1D249350 027 30518  SCC2691AC1D24,518  4.5500NAMOUSER ELECTRONICS1,555 11/20/2009Buy onlineOrder samples
    NAARROW ELECTRONICS655 11/19/2009Buy online 
    NAMOUSER ELECTRONICS1,555 11/20/2009Buy online 
SCC2691AC1D24/N9352 785 14118  -        not available
SCC2691AC1D24/N9352 785 14518  SCC2691AC1D24/N,51        Order samples
SCC2691AC1N249338 115 40129  SCC2691AC1N24,129  4.5500NANEWARK37 11/20/2009Buy onlineOrder samples
    NAARROW ELECTRONICS1,220 11/19/2009Buy online 
    NAAVNET ELECTRONICS MARKETING7,412 11/19/2009Buy online 
    ASIAWPI751511/19/2009Buy online 
SCC2691AC1N249338 115 40602  SCC2691AC1N24,602  4.5500NAMOUSER ELECTRONICS345 11/20/2009Buy onlinenot available
    NANEWARK37 11/20/2009Buy online 
    NAARROW ELECTRONICS1,220 11/19/2009Buy online 
    NADIGI-KEY CORPORATION447 11/20/2009Buy online 
    NAMOUSER ELECTRONICS345 11/20/2009Buy online 
    NAFUTURE ELECTRONICS1,248 11/19/2009Buy online 
    NAAVNET ELECTRONICS MARKETING14,824 11/19/2009Buy online 
SCC2691AE1A289350 269 70129  SCC2691AE1A28,129  NAARROW ELECTRONICS2,855 11/19/2009Buy onlinenot available
    NAAVNET ELECTRONICS MARKETING211 11/19/2009Buy online 
SCC2691AE1A289350 269 70602  SCC2691AE1A28,602  4.9400NAMOUSER ELECTRONICS2,366 11/20/2009Buy onlineOrder samples
    NAARROW ELECTRONICS2,855 11/19/2009Buy online 
    NADIGI-KEY CORPORATION1,330 11/20/2009Buy online 
    NAMOUSER ELECTRONICS2,366 11/20/2009Buy online 
    NAAVNET ELECTRONICS MARKETING422 11/19/2009Buy online 
SCC2691AE1A289350 269 70623  SCC2691AE1A28,623  4.9400NAARROW ELECTRONICS2,855 11/19/2009Buy onlinenot available
    NAAVNET ELECTRONICS MARKETING211 11/19/2009Buy online 
    NAFUTURE ELECTRONICS856 11/19/2009Buy online 
    NAARROW ELECTRONICS750 11/19/2009Buy online 
SCC2691AE1N249350 269 90129  SCC2691AE1N24,129  4.6200NAARROW ELECTRONICS430 11/19/2009Buy onlineOrder samples
    NAAVNET ELECTRONICS MARKETING95 11/19/2009Buy online 
SCC2691AE1N249350 269 90602  SCC2691AE1N24,602  4.6200NAMOUSER ELECTRONICS511 11/20/2009Buy onlinenot available
    NAARROW ELECTRONICS430 11/19/2009Buy online 
    NADIGI-KEY CORPORATION757 11/20/2009Buy online 
    NAMOUSER ELECTRONICS511 11/20/2009Buy online 
    NAFUTURE ELECTRONICS854 11/19/2009Buy online 
    NAAVNET ELECTRONICS MARKETING190 11/19/2009Buy online 

Discontinued information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
SCC2691AC1A28/N93527851311830-jun-0930-jun-09$product.prunedProduct.eplacementPartDN 64
  • Multi source product
  • Non-availability. No last time buy possible
Non-Manufacturable. Leaded version only discontinued; still selling ROHS compliant part; SCC2691AC1A28

Block diagrams/pinning

Parametrics/similar products

Type numberPackageApplicationFUNCTIONOperating
temp.(Cel)
No. of PinsReceiver/Transmitter Type
SCC2691AC1A28SOT261-2
(PLCC28)
Data CommunicationReceivers/Transmitters0~7028UARTs
SCC2691AC1A28/GSOT261-2
(PLCC28)
Data CommunicationReceivers/Transmitters0~7028UARTs
SCC2691AC1A28/NSOT261-2
(PLCC28)
Data CommunicationReceivers/Transmitters0~7028UARTs
SCC2691AC1D24SOT137
Data CommunicationReceivers/Transmitters0~7024UARTs
SCC2691AC1D24/NSOT137
Data CommunicationReceivers/Transmitters0~7024UARTs
SCC2691AC1N24SOT222-1
(DIP24)
Data CommunicationReceivers/Transmitters0~7024UARTs
SCC2691AE1A28SOT261-2
(PLCC28)
Data CommunicationReceivers/Transmitters-40~8524UARTs
SCC2691AE1N24SOT222-1
(DIP24)
Data CommunicationReceivers/Transmitters-40~8524UARTs


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SCC2691 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.