SN74AS874

更新时间： 2024-11-22 23:03:11

品牌	Logo	应用领域
德州仪器 - TI		触发器
页数	文件大小	规格书
9页	145K
描述
DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS

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SN74AS874 数据手册

SN54ALS874B, SN74ALS874B, SN74ALS876A

SN74AS874, SN74AS876

DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS

SDAS061C – APRIL 1982 – REVISED JANUARY 1995

SN54ALS874B . . . JT PACKAGE

SN74ALS874B, SN74AS874 . . . DW OR NT PACKAGE

(TOP VIEW)

• 3-State Buffer-Type Outputs Drive Bus

Lines Directly

• Bus-Structured Pinout

1CLR

1OE

1D1

1D2

1D3

1D4

2D1

2D2

2D3

2D4

2OE

GND

• Choice of True or Inverting Logic

– SN54ALS874B, SN74ALS874B,

SN74AS874 Have True Outputs

– SN74ALS876A, SN74AS876 Have

Inverting Outputs

1CLK

1Q1

1Q2

1Q3

1Q4

2Q1

2Q2

2Q3

2Q4

2CLK

2CLR

• Asynchronous Clear

• Package Options Include Plastic

Small-Outline (DW) Packages, Plastic (FN)

and Ceramic (FK) Chip Carriers, and

Standard Plastic (NT) and Ceramic (JT)

300-mil DIPs

description

SN54ALS874B . . . FK PACKAGE

(TOP VIEW)

These dual 4-bit D-type edge-triggered flip-flops

feature 3-state outputs designed specifically as

bus drivers. They are particularly suitable for

implementing buffer registers, I/O ports,

bidirectional bus drivers, and working registers.

2 1 28 27 26

1Q2

1D2

1D3

1D4

2D1

2D2

2D3

The edge-triggered flip-flops enter data on the

low-to-high transition of the clock (CLK) input.

The SN54ALS874B, SN74ALS874B, and

SN74AS874 have clear (CLR) inputs and

noninverting Q outputs. The SN74ALS876A and

SN74AS876 have preset (PRE) inputs and

inverting Q outputs; taking PRE low causes the

four Q or Q outputs to go low independently of the

clock.

24 1Q3

23 1Q4

2Q1

2Q2

2Q3

12 13 14 15 16 17 18

The SN54ALS874B is characterized for operation

over the full military temperature range of –55°C

to 125°C. The SN74ALS874B, SN74ALS876A,

SN74AS874, and SN74AS876 devices are

characterized for operation from 0°C to 70°C.

NC – No internal connection

SN74ALS876A, SN74AS876 . . . DW OR NT PACKAGE

(TOP VIEW)

1PRE

1OE

1D1

1D2

1D3

1D4

2D1

2D2

2D3

2D4

2OE

GND

1CLK

1Q1

1Q2

1Q3

1Q4

2Q1

2Q2

2Q3

2Q4

2CLK

2PRE

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...9

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与SN74AS874相关器件

型号	品牌	获取价格	描述	数据表
SN74AS874DW	TI	获取价格	DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SN74AS874DW3	TI	获取价格	IC,FLIP-FLOP,DUAL,D TYPE,AS-TTL,SOP,24PIN,PLASTIC
SN74AS874DWE4	TI	获取价格	DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SN74AS874DWG4	TI	获取价格	DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SN74AS874DWR	TI	获取价格	DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SN74AS874DWRE4	TI	获取价格	DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SN74AS874DWRG4	TI	获取价格	DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS
SN74AS874FN	ROCHESTER	获取价格	Bus Driver, AS Series, 2-Func, 4-Bit, True Output, TTL, PQCC28
SN74AS874FN-00	TI	获取价格	AS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PQCC28
SN74AS874FN3	TI	获取价格	AS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PQCC28

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