Datasheet > 逻辑 > 计数器> SN54LS669J

SN54LS669J

更新时间： 2024-09-13 23:03:07

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		计数器触发器逻辑集成电路输出元件
页数	文件大小	规格书
6页	216K
描述
SYNCHRONOUS 4-BIT UP/DOWN COUNTER

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中文翻译

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技术参数
数据手册
替代型号

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SN54LS669J 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP,	针数：	16
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.22	其他特性：	TCO OUTPUT
计数方向：	BIDIRECTIONAL	系列：	LS
JESD-30 代码：	R-GDIP-T16	JESD-609代码：	e0
长度：	19.3 mm	负载电容（CL）：	15 pF
负载/预设输入：	YES	逻辑集成电路类型：	BINARY COUNTER
工作模式：	SYNCHRONOUS	位数：	4
功能数量：	1	端子数量：	16
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	CERAMIC, GLASS-SEALED	封装代码：	DIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
最大电源电流（ICC）：	34 mA	传播延迟（tpd）：	27 ns
认证状态：	Not Qualified	座面最大高度：	4.19 mm
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	4.5 V
标称供电电压 (Vsup)：	5 V	表面贴装：	NO
技术：	TTL	温度等级：	MILITARY
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
触发器类型：	POSITIVE EDGE	宽度：	7.62 mm
最小 fmax：	25 MHz	Base Number Matches：	1

SN54LS669J 数据手册

SN54/74LS669

SYNCHRONOUS 4-BIT

UP/DOWN COUNTER

The SN54/74LS669 is a synchronous 4-bit up/down counter. The LS669 is

a 4-bit binary counter. For high speed counting applications, this presettable

counter features an internal carry lookahead for cascading purposes. By

clocking all flip-flops simultaneously so the outputs change coincident with

each other (when instructed to do so by the count enable inputs and internal

gating) synchronous operation is provided. This helps to eliminate output

counting spikes, normally associated with asynchronous (ripple-clock) count-

ers. Thefourmaster-slaveflip-flopsaretriggeredontherising(positive-going)

edge of the clock waveform by a buffered clock input.

SYNCHRONOUS 4-BIT

UP/DOWN COUNTER

LOW POWER SCHOTTKY

Circuitry of the load inputs allows loading with the carry-enable output of the

cascaded counters. Because loading is synchronous, disabling of the counter

by setting up a low level on the load input will cause the outputs to agree with

the data inputs after the next clock pulse.

J SUFFIX

CERAMIC

Cascading counters for N-bit synchronous applications are provided by the

carry look-ahead circuitry, without additional gating. Two count-enable inputs

and a carry output help accomplish this function. Count-enable inputs (P and

T) must both be low to count. The level of the up-down input determines the

direction of the count. When the input level is low, the counter counts down,

and when the input is high, the count is up. Input T is fed forward to enable the

carry output. The carry output will now produce a low level output pulse with a

CASE 620-09

N SUFFIX

PLASTIC

CASE 648-08

duration ≈ equal to the high portion of the Q output when counting up and

when counting down ≈ equal to the low portion of the Q output. This low level

carry pulse may be utilized to enable successive cascaded stages. Regard-

less of the level of the clock input, transitions at the P or T inputs are allowed.

By diode-clamping all inputs, transmission line effects are minimized which

allows simplification of system design.

Any changes at control inputs (ENABLE P, ENABLE T, LOAD, UP/DOWN)

will have no effect on the operating mode until clocking occurs because of the

fully independant clock circuits. Whether enabled, disabled, loading or count-

ing, the function of the counter is dictated entirely by the conditions meeting

the stable setup and hold times.

D SUFFIX

SOIC

CASE 751B-03

ORDERING INFORMATION

• Programmable Look-Ahead Up/Down Binary/Decade Counters

• Fully Synchronous Operation for Counting and Programming

• Internal Look-Ahead for Fast Counting

• Carry Output for n-Bit Cascading

SN54LSXXXJ

SN74LSXXXN Plastic

SN74LSXXXD SOIC

Ceramic

• Fully Independent Clock Circuit

• Buffered Outputs

CONNECTION DIAGRAM (TOP VIEW)

FAST AND LS TTL DATA

5-591

12 3 4 5 6

中文翻译

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SN54LS669J 替代型号

型号	品牌	替代类型	描述	数据表
SN74LS169N	ONSEMI	功能相似	BCD DECADE/MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS
SN54LS169J	ONSEMI	功能相似	BCD DECADE/MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS

与SN54LS669J相关器件

型号	品牌	获取价格	描述	数据表
SN54LS669JD	MOTOROLA	获取价格	LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CDIP16, CERAMIC
SN54LS669W	TI	获取价格	SYNCHRONOUS 4-BIT UP/DOWN COUNTERS
SN54LS670	MOTOROLA	获取价格	4 x 4 REGISTER FILE WITH 3-STATE OUTPUTS
SN54LS670	TI	获取价格	4-BY-4 REGISTER FILES WITH 3-STATE OUTPUTS
SN54LS670FK	TI	获取价格	4-BY-4 REGISTER FILES WITH 3-STATE OUTPUTS
SN54LS670J	TI	获取价格	4-BY-4 REGISTER FILES WITH 3-STATE OUTPUTS
SN54LS670J	MOTOROLA	获取价格	4 x 4 REGISTER FILE WITH 3-STATE OUTPUTS
SN54LS670J-00	TI	获取价格	4X4 STANDARD SRAM, 45ns, CDIP16
SN54LS670W	TI	获取价格	4-BY-4 REGISTER FILES WITH 3-STATE OUTPUTS
SN54LS670W-00	TI	获取价格	4X4 STANDARD SRAM, 45ns, CDFP16

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