SN74LS290D

更新时间： 2024-09-08 23:06:19

品牌	Logo	应用领域
安森美 - ONSEMI		计数器触发器逻辑集成电路光电二极管
页数	文件大小	规格书
5页	78K
描述
DECADE COUNTER; 4-BIT BINARY COUNTER

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中文翻译

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数据手册
替代型号

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SN74LS290D 数据手册

SN54/74LS290

SN54/74LS293

DECADE COUNTER;

4-BIT BINARY COUNTER

The SN54/74LS290 and SN54/74LS293 are high-speed 4-bit ripple type

counters partitioned into two sections. Each counter has a divide-by-two sec-

tion and either a divide-by-five (LS290) or divide-by-eight (LS293) section

which are triggered by a HIGH-to-LOW transition on the clock inputs. Each

section can be used separately or tied together (Q to CP)to form BCD,

Bi-quinary, or Modulo-16 counters. Both of the counters have a 2-input gated

Master Reset (Clear), and the LS290 also has a 2-input gated Master Set

(Preset 9).

DECADE COUNTER;

4-BIT BINARY COUNTER

LOW POWER SCHOTTKY

• Corner Power Pin Versions of the LS90 and LS93

• Low Power Consumption . . . Typically 45 mW

• High Count Rates . . . Typically 42 MHz

• Choice of Counting Modes . . . BCD, Bi-Quinary, Binary

• Input Clamp Diodes Limit High Speed Termination Effects

J SUFFIX

CERAMIC

CASE 632-08

CONNECTION DIAGRAM DIP (TOP VIEW)

N SUFFIX

PLASTIC

CASE 646-06

NOTE:

The Flatpak version

has the same pinouts

(Connection Diagram) as

the Dual In-Line Package.

LS290

D SUFFIX

SOIC

CASE 751A-02

GND

ORDERING INFORMATION

SN54LSXXXJ

Ceramic

SN74LSXXXN Plastic

SN74LSXXXD SOIC

LS293

GND

PIN NAMES

LOADING (Note a)

HIGH

LOW

1.5 U.L.

2.0 U.L.

1.0 U.L.

0.25 U.L.

5 (2.5) U.L.

CP1

MR1, MR2

MS1, MS2

Clock (Active LOW going edge) Input to ÷2 Section.

Clock (Active LOW going edge) Input to ÷5 Section (LS290).

Clock (Active LOW going edge) Input to ÷8 Section (LS293).

Master Reset (Clear) Inputs

Master Set (Preset-9, LS290) Inputs

Output from ÷2 Section (Notes b & c)

0.05 U.L.

0.5 U.L.

10 U.L.

Q1, Q2, Q3

Outputs from ÷5 & ÷8 Sections (Note b)

10 U.L.

NOTES:

a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.

b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges.

c) The Q Outputs are guaranteed to drive the full fan-out plus the CP Input of the device.

FAST AND LS TTL DATA

5-1

12 3 4 5

中文翻译

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SN74LS290D 替代型号

型号	品牌	替代类型	描述	数据表
HD74LS290FP	HITACHI	功能相似	暂无描述
SN74LS90D	MOTOROLA	功能相似	DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER

与SN74LS290D相关器件

型号	品牌	获取价格	描述	数据表
SN74LS290D3	TI	获取价格	SN74LS290D3
SN74LS290DR	ROCHESTER	获取价格	LS SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO14
SN74LS290DR	TI	获取价格	DECADE AND 4-BIT BINARY COUNTERS
SN74LS290DR2	MOTOROLA	获取价格	LS SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO14, PLASTIC, SOIC-14
SN74LS290DR2G	ONSEMI	获取价格	LS SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO14, SOIC-14
SN74LS290N	TI	获取价格	DECADE AND 4-BIT BINARY COUNTERS
SN74LS290N	MOTOROLA	获取价格	DECADE COUNTER; 4-BIT BINARY COUNTER
SN74LS290N	ONSEMI	获取价格	DECADE COUNTER; 4-BIT BINARY COUNTER
SN74LS290N1	TI	获取价格	IC,COUNTER,UP,DECADE,LS-TTL,DIP,14PIN,PLASTIC
SN74LS290N3	TI	获取价格	SN74LS290N3

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