Specification	SN74ACT7803-15DL

Access Time	12 ns
Bus Directional	Uni-Directional
Current - Supply (Max) [Max]	400 µA
Data Rate	67 MHz
Expansion Type	Width
Function	Synchronous
FWFT Support	False
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	0.295 in
Package / Case	56-BSSOP
Package / Case	7.5 mm
Programmable Flags Support	True
Retransmit Capability	False
Supplier Device Package	56-SSOP
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

SN74ACT7803 Series

512 x 18 synchronous FIFO memory

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Expansion Type	Data Rate	Bus Directional	Access Time	Operating Temperature [Max]	Package / Case	Package / Case	Package / Case	Supplier Device Package	Function	Current - Supply (Max) [Max]
Texas Instruments SN74ACT7803-40DL	4.5 V	5.5 V	Surface Mount	Width	25 MHz	Uni-Directional	20 ns	70 °C	0.295 in	56-BSSOP	7.5 mm	56-SSOP	Synchronous	400 µA
Texas Instruments SN74ACT7803-15DLR	4.5 V	5.5 V	Surface Mount	Width	67 MHz	Uni-Directional	12 ns	70 °C	0.295 in	56-BSSOP	7.5 mm	56-SSOP	Synchronous	400 µA
Texas Instruments SN74ACT7803-20DLR	4.5 V	5.5 V	Surface Mount	Width	50 MHz	Uni-Directional	13 ns	70 °C	0.295 in	56-BSSOP	7.5 mm	56-SSOP	Synchronous	400 µA
Texas Instruments SN74ACT7803-40DLR	4.5 V	5.5 V	Surface Mount	Width	25 MHz	Uni-Directional	20 ns	70 °C	0.295 in	56-BSSOP	7.5 mm	56-SSOP	Synchronous	400 µA
Texas Instruments SN74ACT7803-15DL	4.5 V	5.5 V	Surface Mount	Width	67 MHz	Uni-Directional	12 ns	70 °C	0.295 in	56-BSSOP	7.5 mm	56-SSOP	Synchronous	400 µA
Texas Instruments SN74ACT7803-25DL	4.5 V	5.5 V	Surface Mount	Width	40 MHz	Uni-Directional	15 ns	70 °C	0.295 in	56-BSSOP	7.5 mm	56-SSOP	Synchronous	400 µA
Texas Instruments SN74ACT7803-25DLR	4.5 V	5.5 V	Surface Mount	Width	40 MHz	Uni-Directional	15 ns	70 °C	0.295 in	56-BSSOP	7.5 mm	56-SSOP	Synchronous	400 µA

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	40	$ 30.98
Texas Instruments	TUBE	1	$ 31.75
		100	$ 28.22
		250	$ 23.20
		1000	$ 20.75

Description

General part information

SN74ACT7803 Series

The SN74ACT7803 is a 512-word × 18-bit FIFO suited for buffering asynchronous datapaths up to

67-MHz clock rates and 12-ns access times. Two devices can be configured for bidirectional data buffering without additional logic. Multiple distributed VCCand GND pins, along with Texas Instruments patented output edge control (OECTM) circuit, dampen simultaneous switching noise.

The write clock (WRTCLK) and read clock (RDCLK) are free running and can be asynchronous or coincident. Data is written to memory on the rising edge of WRTCLK when WRTEN1 is high, WRTEN2\ is low, and input ready (IR) is high. Data is read from memory on the rising edge of RDCLK when RDEN\, OE1\, and OE2\ are low and output ready (OR) is high. The first word written to memory is clocked through to the output buffer, regardless of the RDEN\, OE1\, and OE2\ levels. The OR flag indicates that valid data is present on the output buffer.

Documents

Technical documentation and resources

512 X 18 Clocked First-In, First-Out Memory datasheet (Rev. C)

Data sheet