Product details

Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 16 IOL (max) (mA) 24 IOH (max) (mA) -24 Input type TTL Output type CMOS Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Technology family ACT Rating Catalog Operating temperature range (°C) -40 to 85
Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 16 IOL (max) (mA) 24 IOH (max) (mA) -24 Input type TTL Output type CMOS Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Technology family ACT Rating Catalog Operating temperature range (°C) -40 to 85
SSOP (DL) 56 190.647 mm² 18.42 x 10.35
  • Members of the Texas Instruments WidebusTM Family
  • Inputs Are TTL-Voltage Compatible
  • Inverting Data Paths
  • Independent Registers and Enables for A and B Buses
  • Multiplexed Real-Time and Stored Data
  • Flow-Through Architecture Optimizes PCB Layout
  • Distributed VCC and GND Pin Configurations Minimize High-Speed Switching Noise
  • EPICTM (Enhanced-Performance Implanted CMOS) 1-m Process
  • 500-mA Typical Latch-Up Immunity at 125°C
  • Packaged in Plastic 300-mil Shrink Small-Outline (DL) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin Spacings

 

EPIC and Widebus are trademarks of Texas Instruments Incorporated.

  • Members of the Texas Instruments WidebusTM Family
  • Inputs Are TTL-Voltage Compatible
  • Inverting Data Paths
  • Independent Registers and Enables for A and B Buses
  • Multiplexed Real-Time and Stored Data
  • Flow-Through Architecture Optimizes PCB Layout
  • Distributed VCC and GND Pin Configurations Minimize High-Speed Switching Noise
  • EPICTM (Enhanced-Performance Implanted CMOS) 1-m Process
  • 500-mA Typical Latch-Up Immunity at 125°C
  • Packaged in Plastic 300-mil Shrink Small-Outline (DL) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin Spacings

 

EPIC and Widebus are trademarks of Texas Instruments Incorporated.

The SN54ACT16651 and 74ACT16651 are 16-bit bus transceivers that consist of D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. These devices can be used as two 8-bit transceivers or one 16-bit transceiver.

Complementary output-enable (OEAB and ) inputs are provided to control the transceiver functions. Select-control (SAB and SBA) inputs are provided to select whether real-time or stored data is transferred. A low input level selects real-time data, and a high input level selects stored data. The circuitry used for select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time data. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the SN54ACT16651 and 74ACT16651.

 

Data on the A or B bus, or both, can be stored in the internal D flip-flops by low-to-high transitions at the appropriate clock (CLKAB or CLKBA) inputs regardless of the levels on the select-control or output-enable inputs. When SAB and SBA are in the real-time transfer mode, it is also possible to store data without using the internal D-type flip-flops by simultaneously enabling OEAB and . In this configuration, each output reinforces its input. Thus, when all other data sources to the two sets of bus lines are at high impedance, each set of bus lines remains at its last state.

The 74ACT16651 is packaged in TI's shrink small-outline package, which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.

The SN54ACT16651 is characterized for operation over the full military temperature range of -55°C to 125°C. The 74ACT16651 is characterized for operation from -40°C to 85°C.

 

 

 

The SN54ACT16651 and 74ACT16651 are 16-bit bus transceivers that consist of D-type flip-flops and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. These devices can be used as two 8-bit transceivers or one 16-bit transceiver.

Complementary output-enable (OEAB and ) inputs are provided to control the transceiver functions. Select-control (SAB and SBA) inputs are provided to select whether real-time or stored data is transferred. A low input level selects real-time data, and a high input level selects stored data. The circuitry used for select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time data. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the SN54ACT16651 and 74ACT16651.

 

Data on the A or B bus, or both, can be stored in the internal D flip-flops by low-to-high transitions at the appropriate clock (CLKAB or CLKBA) inputs regardless of the levels on the select-control or output-enable inputs. When SAB and SBA are in the real-time transfer mode, it is also possible to store data without using the internal D-type flip-flops by simultaneously enabling OEAB and . In this configuration, each output reinforces its input. Thus, when all other data sources to the two sets of bus lines are at high impedance, each set of bus lines remains at its last state.

The 74ACT16651 is packaged in TI's shrink small-outline package, which provides twice the I/O pin count and functionality of standard small-outline packages in the same printed-circuit-board area.

The SN54ACT16651 is characterized for operation over the full military temperature range of -55°C to 125°C. The 74ACT16651 is characterized for operation from -40°C to 85°C.

 

 

 

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
SN74ACT244 ACTIVE Eight-channel, 4.5-V to 5.5-V buffers with TTL-compatible CMOS inputs and three-state outputs Same functionality in 20 pin form factor
Similar functionality to the compared device
SN74ACT245 ACTIVE Octal bus transceivers with TTL-compatible CMOS inputs and 3-state outputs Voltage range (4.5V to 5.5V), average drive strength (24mA), average propagation delay (8ns)

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 11
Type Title Date
* Data sheet 16-Bit Transceivers And Registers With 3-State Outputs datasheet (Rev. A) 01 Apr 1996
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 26 Jul 2021
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note Selecting the Right Level Translation Solution (Rev. A) 22 Jun 2004
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note CMOS Power Consumption and CPD Calculation (Rev. B) 01 Jun 1997
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc 01 Apr 1996

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Package Pins CAD symbols, footprints & 3D models
SSOP (DL) 56 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos