Texas Instruments SN74ABT7819A-20PH
- Part Number:
- SN74ABT7819A-20PH
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3706397-SN74ABT7819A-20PH
- Description:
- IC SYNC FIFO MEM 512X18X2 80-QFP
- Datasheet:
- SN74ABT7819A
Texas Instruments SN74ABT7819A-20PH technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments SN74ABT7819A-20PH.
- MountSurface Mount
- Mounting TypeSurface Mount
- Package / Case80-BQFP
- Number of Pins80
- Operating Temperature0°C~70°C
- PackagingTray
- Series74ABT
- Part StatusObsolete
- Moisture Sensitivity Level (MSL)3 (168 Hours)
- Number of Terminations80
- ECCN CodeEAR99
- HTS Code8542.32.00.71
- SubcategoryFIFOs
- TechnologyBICMOS
- Voltage - Supply4.5V~5.5V
- Terminal PositionQUAD
- Terminal FormGULL WING
- Supply Voltage5V
- Terminal Pitch0.8mm
- Base Part Number74ABT7819
- FunctionSynchronous
- Current - Supply (Max)95mA
- Supply Voltage-Max (Vsup)5.5V
- Power Supplies5V
- Supply Voltage-Min (Vsup)4.5V
- Memory Size18K 512 x 18 x 2
- Clock Frequency50MHz
- Access Time12ns
- Data Rate50MHz
- Organization512KX18
- Memory Width18
- Memory Density9437184 bit
- Parallel/SerialPARALLEL
- Bus DirectionalBi-Directional
- Retransmit CapabilityNo
- Programmable Flags SupportYes
- Output EnableYES
- Cycle Time20 ns
- Height Seated (Max)3.1mm
- Length20mm
- Width14mm
- RoHS StatusROHS3 Compliant
SN74ABT7819A-20PH Overview
The 74ABT series, specifically the 74ABT7819, is a product with a professional and reliable design. Although it is currently obsolete, it still possesses impressive features. With 80 terminations in a gull wing terminal form, this product offers a secure and efficient connection. Its maximum supply current is 95mA, ensuring stable performance. The 74ABT7819 also boasts a memory size of 18K 512 x 18 x 2, providing ample storage capacity. With bi-directional bus directional capability, it allows for seamless data transfer in both directions. Additionally, its compact dimensions of 20mm in length and a maximum seated height of 3.1mm make it suitable for various applications.
SN74ABT7819A-20PH Features
18K 512 x 18 x 2 memory size
74ABT series
Best part number of 74ABT7819
FIFOs category
Clock frequency of 50MHz
SN74ABT7819A-20PH Applications
There are a lot of Texas Instruments SN74ABT7819A-20PH FIFOs Memory applications.
Queues for communication systems
Character generators
Event Recorder
Multimedia
Portable Information Devices
Switches
Desktop Computers
Game Consoles
Analog-to-digital converters
Disk Controllers
The 74ABT series, specifically the 74ABT7819, is a product with a professional and reliable design. Although it is currently obsolete, it still possesses impressive features. With 80 terminations in a gull wing terminal form, this product offers a secure and efficient connection. Its maximum supply current is 95mA, ensuring stable performance. The 74ABT7819 also boasts a memory size of 18K 512 x 18 x 2, providing ample storage capacity. With bi-directional bus directional capability, it allows for seamless data transfer in both directions. Additionally, its compact dimensions of 20mm in length and a maximum seated height of 3.1mm make it suitable for various applications.
SN74ABT7819A-20PH Features
18K 512 x 18 x 2 memory size
74ABT series
Best part number of 74ABT7819
FIFOs category
Clock frequency of 50MHz
SN74ABT7819A-20PH Applications
There are a lot of Texas Instruments SN74ABT7819A-20PH FIFOs Memory applications.
Queues for communication systems
Character generators
Event Recorder
Multimedia
Portable Information Devices
Switches
Desktop Computers
Game Consoles
Analog-to-digital converters
Disk Controllers
SN74ABT7819A-20PH More Descriptions
512K X 18 BI-DIRECTIONAL FIFO 12 ns PQFP80
IC SYNC FIFO MEM 512X18X2 80-QFP
A FIFO memory is a storage device that allows data to be written into and read from its array at independent data rates. The SN74ABT7819A is a high-speed, low-power, BiCMOS, bidirectional, clocked FIFO memory. Two independent 512 18 dual-port SRAM FIFOs (FIFOA, FIFOB) on the chip buffer data in opposite directions. Each FIFO has flags to indicate empty and full conditions, a half-full flag, and a programmable almost-full/almost-empty flag. The SN74ABT7819A is a clocked FIFO, which means each port employs a synchronous interface. All data transfers through a port are gated to the low-to-high transition of a continuous (free-running) port clock by enable signals. The continuous clocks for each port are independent of one another and can be asynchronous or coincident. The enables for each port are arranged to provide a simple bidirectional interface between microprocessors and/or buses with synchronous control. The state of the A0A17 outputs is controlled by the port-A chip select (CSA) and the port-A write/read select (W/RA). When both CSA and W/RA are low, the outputs are active. The A0A17 outputs are in the high-impedance state when either CSA or W/RA is high. Data is written to FIFOAB from port A on the low-to-high transition of the port-A clock (CLKA) input when CSA is low, W/RA is high, the port-A write enable (WENA) is high, and the port-A input-ready (IRA) flag is high. Data is read from FIFOBA to the A0A17 outputs on the low-to-high transition of CLKA when CSA is low, W/RA is low, the port-A read enable (RENA) is high, and the port-A output-ready (ORA) flag is high. The state of the B0B17 outputs is controlled by the port-B chip select (CSB) and the port-B write/read select (W/RB). When both CSB and W/RB are low, the outputs are active. The B0B17 outputs are in the high-impedance state when either CSB or W/RB is high. Data is written to FIFOBA from port B on the low-to-high transition of the port-B clock (CLKB) when CSB is low, W/RB is high, the port-B write enable (WENB) is high, and the port-B input-ready (IRB) flag is high. Data is read from FIFOAB to the B0B17 outputs on the low-to-high transition of CLKB when CSB is low, W/RB is low, the port-B read enable (RENB) is high, and the port-B output-ready (ORB) flag is high. The setup- and hold-time constraints for the chip selects (CSA, CSB) and write/read selects (W/RA, W/RB) enable write and read operations on memory and are not related to the high-impedance control of the data outputs. If a port read enable (RENA or RENB) and write enable (WENA or WENB) are set low during a clock cycle, the chip select and write/read select can switch at any time during the cycle to change the state of the data outputs. The input-ready (IR) and output-ready (OR) flags of a FIFO are two-stage synchronized to the port clocks for use as reliable control signals. CLKA synchronizes the status of the input-ready flag of FIFOAB (IRA) and the output-ready flag of FIFOBA (ORA). CLKB synchronizes the status of the input-ready flag of FIFOBA (IRB) and the output-ready flag of FIFOAB (ORB). When the IR flag of a port is low, the FIFO receiving input from the port is full and writes are disabled to its array. When the OR flag of a port is low, the FIFO that outputs data to the port is empty and reads from its memory are disabled. The first word loaded to an empty memory is sent to the FIFO output register at the same time its OR flag is asserted (high). When the memory is read empty and the OR flag is forced low, the last valid data remains on the FIFO outputs until the OR flag is asserted (high) again. In this way, a high on the OR flag indicates new data is present on the FIFO outputs. The SN74ABT7819A is characterized for operation from 0C to 70C.
IC SYNC FIFO MEM 512X18X2 80-QFP
A FIFO memory is a storage device that allows data to be written into and read from its array at independent data rates. The SN74ABT7819A is a high-speed, low-power, BiCMOS, bidirectional, clocked FIFO memory. Two independent 512 18 dual-port SRAM FIFOs (FIFOA, FIFOB) on the chip buffer data in opposite directions. Each FIFO has flags to indicate empty and full conditions, a half-full flag, and a programmable almost-full/almost-empty flag. The SN74ABT7819A is a clocked FIFO, which means each port employs a synchronous interface. All data transfers through a port are gated to the low-to-high transition of a continuous (free-running) port clock by enable signals. The continuous clocks for each port are independent of one another and can be asynchronous or coincident. The enables for each port are arranged to provide a simple bidirectional interface between microprocessors and/or buses with synchronous control. The state of the A0A17 outputs is controlled by the port-A chip select (CSA) and the port-A write/read select (W/RA). When both CSA and W/RA are low, the outputs are active. The A0A17 outputs are in the high-impedance state when either CSA or W/RA is high. Data is written to FIFOAB from port A on the low-to-high transition of the port-A clock (CLKA) input when CSA is low, W/RA is high, the port-A write enable (WENA) is high, and the port-A input-ready (IRA) flag is high. Data is read from FIFOBA to the A0A17 outputs on the low-to-high transition of CLKA when CSA is low, W/RA is low, the port-A read enable (RENA) is high, and the port-A output-ready (ORA) flag is high. The state of the B0B17 outputs is controlled by the port-B chip select (CSB) and the port-B write/read select (W/RB). When both CSB and W/RB are low, the outputs are active. The B0B17 outputs are in the high-impedance state when either CSB or W/RB is high. Data is written to FIFOBA from port B on the low-to-high transition of the port-B clock (CLKB) when CSB is low, W/RB is high, the port-B write enable (WENB) is high, and the port-B input-ready (IRB) flag is high. Data is read from FIFOAB to the B0B17 outputs on the low-to-high transition of CLKB when CSB is low, W/RB is low, the port-B read enable (RENB) is high, and the port-B output-ready (ORB) flag is high. The setup- and hold-time constraints for the chip selects (CSA, CSB) and write/read selects (W/RA, W/RB) enable write and read operations on memory and are not related to the high-impedance control of the data outputs. If a port read enable (RENA or RENB) and write enable (WENA or WENB) are set low during a clock cycle, the chip select and write/read select can switch at any time during the cycle to change the state of the data outputs. The input-ready (IR) and output-ready (OR) flags of a FIFO are two-stage synchronized to the port clocks for use as reliable control signals. CLKA synchronizes the status of the input-ready flag of FIFOAB (IRA) and the output-ready flag of FIFOBA (ORA). CLKB synchronizes the status of the input-ready flag of FIFOBA (IRB) and the output-ready flag of FIFOAB (ORB). When the IR flag of a port is low, the FIFO receiving input from the port is full and writes are disabled to its array. When the OR flag of a port is low, the FIFO that outputs data to the port is empty and reads from its memory are disabled. The first word loaded to an empty memory is sent to the FIFO output register at the same time its OR flag is asserted (high). When the memory is read empty and the OR flag is forced low, the last valid data remains on the FIFO outputs until the OR flag is asserted (high) again. In this way, a high on the OR flag indicates new data is present on the FIFO outputs. The SN74ABT7819A is characterized for operation from 0C to 70C.
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