m Process
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The 'ACT16646 are 16-bit bus transceivers consisting of D-type flip-flops and control circuitry with 3-state outputs arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. The devices can be used as two 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the bus transceivers and registers.
Output-enable 
and
direction-control (DIR) inputs are provided to control the
transceiver functions. In the transceiver mode, data present at the
high-impedance port may be stored in either register or in both. The
select controls (SAB and SBA) can multiplex stored and real-time
(transparent mode) 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. DIR
determines which bus receives data when 
is low. In the isolation mode
( high), A data
may be stored in one register and/or B data may be stored in the
other register.
When an output function is disabled, the input function is still enabled and may be used to store and transmit data. Only one of the two buses, A or B, may be driven at a time.
The 74ACT16646 is packaged in TI's shrink small-outline package, which provides twice the functionality of standard small-outline packages in the same printed-circuit-board area.
The 54ACT16646 is characterized for operation over the full military temperature range of -55°C to 125°C. The 74ACT16646 is characterized for operation from -40°C to 85°C.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | 16-Bit Bus Transceivers And Registers With 3-State Outputs datasheet (Rev. B) | 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 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | Download |
|---|---|---|
| SSOP (DL) | 56 | View options |
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