Datasheet Details
| Part number | SN74ALS990 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 641.70 KB |
| Description | 8-BIT D-TYPE TRANSPARENT READ-BACK LATCH |
| Datasheet | SN74ALS990-etcTI.pdf |
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Overview: SN74ALS990 8-BIT D-TYPE TRANSPARENT READ-BACK LATCH SDAS027B – APRIL 1984 – REVISED JANUARY 1995 • 3-State I/O-Type Read-Back Inputs • Bus-Structured Pinout • True Logic Outputs • Package Options Include.
| Part number | SN74ALS990 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 641.70 KB |
| Description | 8-BIT D-TYPE TRANSPARENT READ-BACK LATCH |
| Datasheet | SN74ALS990-etcTI.pdf |
|
|
|
This 8-bit latch is designed specifically for storing the contents of the input data bus and providing the capability of reading back the stored data onto the input data bus.
DW OR N PACKAGE (TOP VIEW) OERB 1 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 GND 10 20 VCC 19 1Q 18 2Q 17 3Q 16 4Q 15 5Q 14 6Q 13 7Q 12 8Q 11 LE The eight latches are transparent D-type latches.
While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs.
| Part Number | Description |
|---|---|
| SN74ALS992 | 9-BIT D-TYPE TRANSPARENT READ-BACK LATCH |
| SN74ALS996 | 8-Bit D-Type Edge-Triggered Read-Back Latches |
| SN74ALS00A | Quadruple 2-Input Positive-NAND Gates |
| SN74ALS02A | Quadruple 2-Input Positive-NOR Gates |
| SN74ALS03B | Quadruple 2-Input Positive-NAND Buffer |
| SN74ALS04B | Hex Inverters |
| SN74ALS05A | HEX INVERTER |
| SN74ALS08 | Quadruple 2-Input Positive-AND Gates |
| SN74ALS09 | QUADRUPLE 2-INPUT POSITIVE-AND GATE |
| SN74ALS1002A | Quadruple 2-Input Positive-NOR Buffer |