Document
CY7C419/21/25/29/33256/512/1K/2K/4K x 9 Asynchronous FIFO
CY7C419/21/25/29/33
256/512/1K/2K/4K x 9 Asynchronous FIFO
Features
■ Asynchronous first-in first-out (FIFO) buffer memories ■ 256 x 9 (CY7C419) ■ 512 x 9 (CY7C421) ■ 1K x 9 (CY7C425) ■ 2K x 9 (CY7C429) ■ 4K x 9 (CY7C433) ■ Dual-ported RAM cell ■ High speed 50 MHz read and write independent of depth and
width ■ Low operating power: ICC = 35 mA ■ Empty and full flags (Half Full flag in standalone) ■ TTL compatible ■ Retransmit in standalone ■ Expandable in width ■ PLCC, 7x7 TQFP, SOJ, 300-mil, and 600-mil DIP ■ Pb-free packages available ■ Pin compatible and functionally equivalent to IDT7200,
IDT7201, IDT7202, IDT7203, IDT7204, AM7200, AM7201, AM7202, AM7203, and AM7204
Logic Block Diagram
Functional Description
The CY7C419, CY7C420/1, CY7C424/5, CY7C428/9, and CY7C432/3 are first-in first-out (FIFO) memories offered in 600-mil wide and 300-mil wide packages. There are 256, 512, 1,024, 2,048, a.