SN74ACT7808-40 PAG
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SN74ACT7808-40 PAG
FIFO, 2KX9, 28NS, SYNCHRONOUS
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Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
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SN74ACT7808-40 PAG description
A FIFO memory is a storage device that allows data to be written into and read from its array at independentdata rates. The SN74ACT7808 is a 2048-word by 9-bit FIFO designed for high speed and fast access times.It processes data at rates up to 50 MHz and access times of 15 ns in a bit-parallel format.Data is written into memory on a low-to-high transition at the load-clock (LDCK) input and is read out on alow-to-high transition at the unload-clock (UNCK) input. The memory is full when the number of words clockedin exceeds the number of words clocked out by 2048. When the memory is full, LDCK signals have no effecton the data residing in memory. When the memory is empty, UNCK signals have no effect.Status of the FIFO memory is monitored by the full (FULL), empty (EMPTY), half-full (HF), andalmost-full/almost-empty (AF/AE) flags. The FULL output is low when the memory is full and high when thememory is not full. The EMPTY output is low when the memory is empty and high when it is not empty. The HFoutput is high when the FIFO contains 1024 or more words and is low when it contains 1023 or fewer words.The AF/AE status flag is a programmable flag. The first one or two low-to-high transitions of LDCK after resetcan be used to program the almost-empty offset value (X) and the almost-full offset value (Y) if program enable(PEN) is low. The AF/AE flag is high when the FIFO contains X or fewer words or (2048 – Y) or more words.The AF/AE flag is low when the FIFO contains between (X + 1) and (2047 – Y) words.A low level on the reset (RESET) input resets the internal stack pointers and sets FULL high, AF/AE high, HFlow, and EMPTY low. The Q outputs are not reset to any specific logic level.The first word loaded into empty memory causes EMPTY to go high and the data to appear on the Q outputs.It is important to note that the first word does not have to be unloaded. Data outputs are noninverting with respectto the data inputs and are in the high-impedance state when the output-enable (OE) input is low. OE does notaffect the output flags.Cascading is easily accomplished in the word-width and word-depth directions. When not using the FIFO indepth expansion, cascade enable (CASEN) must be tied high.The FIFO must be reset upon power up.The SN74ACT7808 is characterized for operation from 0°C to 70°C.Copyright 2001, Texas Instruments IncorporatedPRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Product Attributes
| TYPE | DESCRIPTION | Select all |
|---|---|---|
| Programmable | Not Verified | |
| FWFT Support | - | |
| Product Status | Active | |
| Retransmit Capability | - | |
| Programmable Flags Support | - | |
| Series | * | |
| Expansion Type | - | |
| Bus Directional | - | |
| Current - Supply (Max) | - | |
| Voltage - Supply | - | |
| Access Time | - | |
| Supplier Device Package | - | |
| Data Rate | - | |
| Package / Case | - | |
| Function | - | |
| Mounting Type | - | |
| Memory Size | - | |
| Operating Temperature | - | |
| Package | Bulk |
Active
Quantity Available:
2295
SZC Quality Assurance
Texas Instruments
Texas Instruments Incorporated (TI) is a global semiconductor powerhouse, crafts advanced analog ICs and embedded processors. Fueled by top-tier minds, TI's innovations drive tech's future, impacting 100,000+ clients.
View All Product from Texas InstrumentsYou May Also Be Interested In
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