Integrated Circuits (ICs) > Memory > FIFO > Texas-Instruments-SN74ACT7808-30PAG

Texas Instruments SN74ACT7808-30PAG

Texas Instruments

Part Number:	Texas Instruments SN74ACT7808-30PAG
Manufacturer:	Texas Instruments
Part Type:	Integrated Circuits (ICs) > Memory > FIFO > Texas-Instruments-SN74ACT7808-30PAG
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Description:	FIFO Mem Async Dual Depth/Width Uni-Dir 2K x 9 64-Pin TQFP Tray

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FIFO Mem Async Dual Depth/Width Uni-Dir 2K x 9 64-Pin TQFP Tray

Specifications

TYPE	DESCRIPTION
Case/Package	TQFP
Mount	Surface Mount
Number of Pins	64
Access Time	20 ns
Bus Directional	Unidirectional
Frequency	33.3 MHz
FWFT Support	No
Max Operating Temperature	70 °C
Max Supply Current	400 µA
Memory Size	2.2 kB
Min Operating Temperature	0 °C
Packaging	Bulk
Programmable Flags Support	Yes
Retransmit Capability	No

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Documentation for Texas Instruments Texas Instruments SN74ACT7808-30PAG

Datasheet	View & Download Texas-Instruments-SN74ACT7808-30PAG Datasheet
Datasheet	View & Download Texas-Instruments-SN74ACT7808-30PAG Datasheet

Alternate Descriptions

Descriptions of Texas Instruments SN74ACT7808-30PAG provided by its distributors.
FIFO Mem Async Dual Depth/Width Uni-Dir 2K x 9 64-Pin TQFP Tray
FIFO, 2KX9, 25ns, Synchronous, CMOS, PQFP64
2K X 9 OTHER FIFO 25 ns PQFP64
IC ASYNC FIFO MEM 2048X9 64-TQFP
IC FIFO ASYNC 2KX9 20NS 64TQFP
A FIFO memory is a storage device that allows data to be written into and read from its array at independent data 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 a low-to-high transition at the unload-clock (UNCK) input. The memory is full when the number of words clocked in exceeds the number of words clocked out by 2048. When the memory is full, LDCK signals have no effect on 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), and almost-full/almost-empty (AF/AE) flags. The FULL\ output is low when the memory is full and high when the memory is not full. The EMPTY\ output is low when the memory is empty and high when it is not empty. The HF output 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 reset can 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 ï¿½ Y) or more words. The AF/AE flag is low when the FIFO contains between (X + 1) and (2047 ï¿½ Y) words. A low level on the reset (RESET\) input resets the internal stack pointers and sets FULL high, AF/AE high, HF low, 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 respect to the data inputs and are in the high-impedance state when the output-enable (OE) input is low. OE does not affect the output flags. Cascading is easily accomplished in the word-width and word-depth directions. When not using the FIFO in depth expansion, cascade enable (CASEN\) must be tied high. The FIFO must be reset upon power up. The SN74ACT7808 is characterized for operation from 0C to 70C.

Texas Instruments SN74ACT7808-30PAG

Texas Instruments

Specifications

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Documentation for Texas Instruments Texas Instruments SN74ACT7808-30PAG

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