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74AC11652

Texas Instruments
Part Number 74AC11652
Manufacturer Texas Instruments
Description OCTAL BUS TRANSCEIVER AND REGISTER
Published Aug 19, 2019
Detailed Description 74AC11652 OCTAL BUS TRANSCEIVER AND REGISTERS WITH 3-STATE OUTPUTS SCAS088A - DECEMBER 1989 - REVISED APRIL 1996 D Inde...
Datasheet PDF File 74AC11652 PDF File

74AC11652
74AC11652

Overview
74AC11652 OCTAL BUS TRANSCEIVER AND REGISTERS WITH 3-STATE OUTPUTS SCAS088A - DECEMBER 1989 - REVISED APRIL 1996 D Independent Registers and Enables for A and B Buses DW PACKAGE (TOP VIEW) D Multiplexed Real-Time and Stored Data D Inverting Data Paths D Flow-Through Architecture Optimizes PCB Layout D Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise OEAB A1 A2 A3 A4 GND 1 2 3 4 5 6 28 CLKAB 27 SAB 26 B1 25 B2 24 B3 23 B4 D EPIC ™ (Enhanced-Performance Implanted CMOS) 1-µm Process D 500-mA Typical Latch-Up Immunity at 125°C GND GND GND A5 A6 7 8 9 10 11 22 VCC 21 VCC 20 B5 19 B6 18 B7 description A7 12 A8 13 17 B8 16 CLKBA The 74AC11652 consists of bus transceiver OEBA 14 15 SBA circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers.
Output-enable (OEAB and OEBA) inputs are provided to control the transceiver functions.
The 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.
Figure 1 illustrates the four fundamental bus-management functions that can be performed with the 74AC11652.
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 select- or enable-control pins.
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 OEBA.
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 remains at its last state.
The 74AC11652 is characterized for operation from – 40°C to 85°C.
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