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.
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| SCC2691AC1A28 | 9338 115 50129 | Volume production | SOT261-2
(PLCC28) | SCC2691AC1A28
| Always Pb-free | |||
| SCC2691AC1A28 | SCC2691AC1A28 | 9338 115 50602 | Volume production | SOT261-2
(PLCC28) | Tube (Signetics) | Standard Marking | SCC2691AC1A28
| week 12, 2005 |
| SCC2691AC1A28 | SCC2691AC1A28-T | 9338 115 50623 | Volume production | SOT261-2
(PLCC28) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | SCC2691AC1A28
| week 12, 2005 |
| SCC2691AC1D24 | SCC2691AC1D24 | 9350 027 30512 | Volume production | SOT137-1
(SO24) | Tube Dry Pack | Standard Marking | SCC2691AC1D24
| week 11, 2005 |
| SCC2691AC1D24 | 9350 027 30529 | Volume production | SOT137-1
(SO24) | SCC2691AC1D24
| week 11, 2005 | |||
| SCC2691AC1D24 | SCC2691AC1D24-T | 9350 027 30518 | Volume production | SOT137-1
(SO24) | Reel Dry Pack, SMD, 13" | Standard Marking | SCC2691AC1D24
| week 11, 2005 |
| SCC2691AC1N24 | SCC2691AC1N24-S | 9338 115 40129 | Volume production | SOT222-1
(DIP24) | SCC2691AC1N24
| week 8, 2005 | ||
| SCC2691AC1N24 | SCC2691AC1N24 | 9338 115 40602 | Volume production | SOT222-1
(DIP24) | Tube (Signetics) | Standard Marking | SCC2691AC1N24
| week 8, 2005 |
| SCC2691AE1A28 | 9350 269 70129 | Volume production | SOT261-2
(PLCC28) | SCC2691AE1A28
| week 8, 2005 | |||
| SCC2691AE1A28 | SCC2691AE1A28 | 9350 269 70602 | Volume production | SOT261-2
(PLCC28) | Tube (Signetics) | Standard Marking | SCC2691AE1A28
| week 8, 2005 |
| SCC2691AE1A28 | SCC2691AE1A28-T | 9350 269 70623 | Volume production | SOT261-2
(PLCC28) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | SCC2691AE1A28
| week 8, 2005 |
| SCC2691AE1N24 | SCC2691AE1N24-S | 9350 269 90129 | Volume production | SOT222-1
(DIP24) | SCC2691AE1N24
| week 12, 2005 | ||
| SCC2691AE1N24 | SCC2691AE1N24 | 9350 269 90602 | Volume production | SOT222-1
(DIP24) | Tube (Signetics) | Standard Marking | SCC2691AE1N24
| week 12, 2005 |
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| SCC2691AC1A28 | 9338 115 50129 | Order samples | ||||||
| SCC2691AC1A28 | 9338 115 50602 | 4.5500 | NA | ARROW ELECTRONICS | 1,751 | 12/3/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 1,751 | 12/3/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 1,873 | 12/3/2008 | Buy online | ||||
| EU | FARNELL | 93 | 12/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 1,095 | 12/3/2008 | Buy online | ||||
| NA | NEWARK | 93 | 12/3/2008 | Buy online | ||||
| SCC2691AC1A28 | 9338 115 50623 | 4.5500 | NA | FUTURE ELECTRONICS | 900 | 12/3/2008 | Buy online | not available |
| SCC2691AC1D24 | 9350 027 30512 | 4.5500 | NA | ARROW ELECTRONICS | 1,625 | 12/3/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 367 | 12/3/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 1,475 | 12/3/2008 | Buy online | ||||
| EU | FARNELL | 54 | 12/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 1,045 | 12/3/2008 | Buy online | ||||
| NA | NEWARK | 54 | 12/3/2008 | Buy online | ||||
| SCC2691AC1D24 | 9350 027 30529 | not available | ||||||
| SCC2691AC1D24 | 9350 027 30518 | 4.5500 | NA | MOUSER ELECTRONICS | 1,865 | 12/3/2008 | Buy online | Order samples |
| SCC2691AC1N24 | 9338 115 40129 | 4.5500 | Order samples | |||||
| SCC2691AC1N24 | 9338 115 40602 | 4.5500 | NA | ARROW ELECTRONICS | 2,015 | 12/3/2008 | Buy online | not available |
| NA | DIGI-KEY CORPORATION | 227 | 12/3/2008 | Buy online | ||||
| EU | FARNELL | 228 | 12/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 280 | 12/3/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 395 | 12/3/2008 | Buy online | ||||
| NA | NEWARK | 15 | 12/3/2008 | Buy online | ||||
| SCC2691AE1A28 | 9350 269 70129 | not available | ||||||
| SCC2691AE1A28 | 9350 269 70602 | 4.9400 | NA | AVNET ELECTRONICS MARKETING | 584 | 12/3/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 1,553 | 12/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 986 | 12/3/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 37 | 12/3/2008 | Buy online | ||||
| SCC2691AE1A28 | 9350 269 70623 | 4.9400 | NA | ARROW ELECTRONICS | 750 | 12/3/2008 | Buy online | not available |
| SCC2691AE1N24 | 9350 269 90129 | 4.6200 | Order samples | |||||
| SCC2691AE1N24 | 9350 269 90602 | 4.6200 | NA | ARROW ELECTRONICS | 575 | 12/3/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 334 | 12/3/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 794 | 12/3/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS | 319 | 12/3/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 590 | 12/3/2008 | Buy online |
Related applications
Cellular phone - MMS functionality
LCD TV - MMS functionality
Set-top box - MMS functionality
Application Notes
Support Documents
| Type number | Package | Application | FUNCTION | Operating temp.(Cel) | No. of Pins | Receiver/Transmitter Type |
|---|---|---|---|---|---|---|
| SCC2691AC1A28 | SOT261-2
(PLCC28) | Data Communication | Receivers/Transmitters | 0~70 | 28 | UARTs |
| SCC2691AC1D24 | SOT137-1
(SO24) | Data Communication | Receivers/Transmitters | 0~70 | 24 | UARTs |
| SCC2691AC1N24 | SOT222-1
(DIP24) | Data Communication | Receivers/Transmitters | 0~70 | 24 | UARTs |
| SCC2691AE1A28 | SOT261-2
(PLCC28) | Data Communication | Receivers/Transmitters | -40~85 | 24 | UARTs |
| SCC2691AE1N24 | SOT222-1
(DIP24) | Data Communication | Receivers/Transmitters | -40~85 | 24 | UARTs |
Similar products
SCC2691
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