DM74AS652WMX
DM74AS652WMX Datasheet
DM74AS651<br>• DM74AS652 Octal Bus Transceiver and Register
| Part | Datasheet |
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DM74AS652WMX |
DM74AS652WMX (pdf) |
| Related Parts | Information |
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DM74AS651WM |
DM74AS651WM |
DM74AS651NT |
DM74AS651NT |
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DM74AS652WM |
DM74AS652WM |
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DM74AS651WMX |
DM74AS651WMX |
DM74AS652NT |
DM74AS652NT |
| PDF Datasheet Preview |
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| DM74AS651 • DM74AS652 Octal Bus Transceiver and Register DM74AS651 • DM74AS652 Octal Bus Transceiver and Register These devices incorporate an octal transceiver and an octal D-type register configured to enable transmission of data from bus to bus or internal register to bus. The DM74AS651 offers 64-Industrial grade product guaranteeing performance from −40°C to +85°C. These bus transceivers feature totem-pole 3-STATE outputs designed specifically for driving highly-capacitive or relatively low-impedance loads. The high-impedance state and increased high-logic-level drive provide these devices with the capability of being connected directly to and driving the bus lines in a bus-organized system without need for interface or pull-up components. They are particularly attractive for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The registers in the DM74AS651 and DM74AS652 are edge-triggered D-type flip-flops. On the positive transition of the clock CAB or CBA , the input data is stored. The SAB and SBA control pins are provided to select whether real-time data or stored data is transferred. A LOW input level selects real-time data and a HIGH level selects stored data. The select controls have a “make before break” configuration to eliminate a glitch which would normally occur in a typical multiplexer during the transition between stored and real-time data. The Enable GAB and GBA control pins provide four modes of operation real-time data transfer from bus A-toB, real-time data transfer from bus B-to-A, real-time bus A and/or B data transfer to internal storage, or internal stored data transfer to bus A and/or B. s Switching specifications at 50 pF s Switching specifications guaranteed over full tempera- ture and VCC range s Advanced oxide-isolated, ion-implanted Schottky TTL process s 3-STATE buffer-type outputs drive bus lines directly s Guaranteed performance over industrial temperature range −40°C to +85°C in 64-grade products Ordering Code: Order Number Package Number Package Description DM74AS651WM M24B 24-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide DM74AS651NT N24C 24-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide DM74AS652WM M24B 24-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide DM74AS652NT N24C 24-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. 2003 Fairchild Semiconductor Corporation DS006325 DM74AS651 • DM74AS652 Connection Diagram Function Table INPUTS DATA I/O Note 1 OPERATION OR FUNCTION GAB GBA CAB CBA SAB SBA L H or L H or L X A1 THRU Input B1 THRU Input DM74AS651 Isolation Store A and B Data DM74AS652 Isolation Store A and B Data Output L X H or L X Input Real Time B Data to A Bus Stored B Data to A Bus Real Time B Data to A Bus Stored B Data to A Bus H or L X Input Output Real Time A Data to B Bus Stored A Data to B Bus Real Time A Data to B Bus Stored A Data to B Bus Stored A Data to B Bus Stored A Data to B Bus H L H or L H or L H Output Output & Stored B Data to A Bus & Stored B Data to A Bus X H or L X Input Unspecified Store A, Hold B Note 1 Store A, Hold B |
| More datasheets: BC635_D27Z | BC637_D26Z | BC637_D27Z | BC637_D75Z | BC637_L34Z | BC635 | 383-2UYC/S400-A7 | AFCT-721XPDZ | DM74AS651WM | DM74AS651NT |
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