Datasheet > 存储 > FIFO> SN74ACT2235-20FN

SN74ACT2235-20FN

更新时间： 2024-10-29 05:17:59

品牌	Logo	应用领域
德州仪器 - TI		存储
页数	文件大小	规格书
18页	276K
描述
1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY

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SN74ACT2235-20FN 数据手册

SN74ACT2235

1024 × 9 × 2

ASYNCHRONOUS BIDIRECTIONAL FIRST-IN, FIRST-OUT MEMORY

SCAS148F – DECEMBER 1990 – REVISED JUNE 2003

Independent Asynchronous Inputs and

Outputs

Access Times of 25 ns With a 50-pF Load

Data Rates up to 50 MHz

Low-Power Advanced CMOS Technology

Bidirectional

Fall-Through Times of 22 ns Maximum

High Output Drive for Direct Bus Interface

Dual 1024 by 9 Bits

Package Options Include 44-Pin Plastic

Leaded Chip Carriers (FN) and 64-Pin Thin

Quad Flat (PAG, PM) Packages

Programmable Almost-Full/Almost-Empty

Flag

Empty, Full, and Half-Full Flags

description

A FIFO memory is a storage device that allows data to be written into and read from its array at independent

data rates. The SN74ACT2235 is arranged as two 1024 × 9-bit FIFOs for high speed and fast access times.

It processes data at rates up to 50 MHz, with access times of 25 ns in a bit-parallel format.

The SN74ACT2235 consists of bus-transceiver circuits, two 1024 × 9-bit FIFOs, and control circuitry arranged

for multiplexed transmission of data directly from the data bus or from the internal FIFO memories. Enable (GAB

and GBA) inputs are provided to control the transceiver functions. The select-control (SAB and SBA) inputs are

provided to select whether real-time or stored data is transferred. The circuitry used for select control eliminates

the typical decoding glitch that occurs in a multiplexer during the transition between stored and real-time data.

Figure 2 shows the eight fundamental bus-management functions that can be performed with the

SN74ACT2235.

For more information on this device family, see the application report, 1K × 9 × 2 Asynchronous FIFO

SN74ACT2235, literature number SCAA010.

The SN74ACT2235 is characterized for operation from 0°C to 70°C.

FN PACKAGE

(TOP VIEW)

6 5

1 44 43 42 41 40

GND

AF/AEB

HFB

GND

AF/AEA

HFA

LDCKA

18 19 20 21 22 23 24 25 26 27 28

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...18

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SN74ACT2235-20FN 替代型号

型号	品牌	替代类型	描述	数据表
SN74ACT2235-30FN	TI	完全替代	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-60FN	TI	类似代替	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-40FN	TI	类似代替	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST

与SN74ACT2235-20FN相关器件

型号	品牌	获取价格	描述	数据表
SN74ACT2235-20FNR	TI	获取价格	1KX9 BI-DIRECTIONAL FIFO, 25ns, PQCC44, PLASTIC, LCC-44
SN74ACT2235-20PAG	TI	获取价格	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-20PM	TI	获取价格	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-20PMR	TI	获取价格	1KX9 BI-DIRECTIONAL FIFO, 25ns, PQFP64, PLASTIC, LQFP-64
SN74ACT2235-30FN	TI	获取价格	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-30FNR	TI	获取价格	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-30PAG	TI	获取价格	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-30PAGR	TI	获取价格	1KX9 BI-DIRECTIONAL FIFO, 25ns, PQFP64, GREEN, PLASTIC, TQFP-64
SN74ACT2235-30PM	TI	获取价格	1024 】 9 】 2 ASYNCHRONOUS BIDIRECTIONAL FIRST
SN74ACT2235-30PMR	TI	获取价格	1KX9 BI-DIRECTIONAL FIFO, 25ns, PQFP64, PLASTIC, LQFP-64

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