Datasheet > 逻辑 > 计数器> DM74AS169AN

DM74AS169AN

更新时间： 2024-11-13 22:56:51

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		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
6页	65K
描述
Synchronous 4-Bit Binary Up/Down Counter

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DM74AS169AN 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	DIP	包装说明：	DIP, DIP16,.3
针数：	16	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.59
Is Samacsys：	N	计数方向：	BIDIRECTIONAL
系列：	AS	JESD-30 代码：	R-PDIP-T16
长度：	19.304 mm	负载/预设输入：	YES
逻辑集成电路类型：	BINARY COUNTER	最大频率@ Nom-Sup：	75000000 Hz
最大I（ol）：	0.02 A	工作模式：	SYNCHRONOUS
位数：	4	功能数量：	1
端子数量：	16	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装等效代码：	DIP16,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	5 V
最大电源电流（ICC）：	63 mA	传播延迟（tpd）：	13 ns
认证状态：	Not Qualified	座面最大高度：	5.08 mm
子类别：	Counters	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：	COMMERCIAL	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	触发器类型：	POSITIVE EDGE
宽度：	7.62 mm	最小 fmax：	75 MHz
Base Number Matches：	1

DM74AS169AN 数据手册

April 1984

Revised March 2000

DM74AS169A

Synchronous 4-Bit Binary Up/Down Counter

General Description

Features

These synchronous presettable counters feature an inter-

nal carry look ahead for cascading in high speed counting

applications. The DM74AS169 is a 4-bit binary up/down

counter. The carry output is decoded to prevent spikes dur-

ing normal mode of counting operation. Synchronous oper-

ation is provided so that outputs change coincident with

each other when so instructed by count enable inputs and

internal gating. This mode of operation eliminates the out-

put counting spikes which are normally associated with

asynchronous (ripple clock) counters. A buffered clock

input triggers the four flip-flops on the rising (positive going)

edge of clock input waveform.

■ Switching Specifications at 50 pF

■ Switching Specifications guaranteed over full tempera-

ture and V_CCrange

■ Advanced oxide-isolated, ion-implanted Schottky TTL

process

■ Functionally and pin-for-pin compatible with Schottky

and low power Schottky TTL counterpart

■ Improved AC performance over Schottky and low power

Schottky counterparts

■ Synchronously programmable

■ Internal look ahead for fast counting

■ Carry output for n-bit cascading

■ Synchronous counting

■ Load control line

These counters are fully programmable; that is, the outputs

may each be preset either HIGH or LOW. The load input

circuitry allows loading with carry-enable output of cas-

caded counters. As loading is synchronous, setting up a

LOW level at the load input disables the counter and

causes the outputs to agree with the data inputs after the

next clock pulse.

■ ESD inputs

The carry look-ahead circuitry permits cascading counters

for n-bit synchronous applications without additional gating.

Both count enable inputs (P and T) must be LOW to count.

The direction of the count is determined by the level of the

up/down input. When the input is HIGH, the counter counts

UP; when LOW, it counts DOWN. Input T is fed forward to

enable the carry outputs. The carry output thus enabled will

produce a LOW level output pulse with a duration approxi-

mately equal to the HIGH portion of the QA output when

counting UP, and approximately equal to the LOW portion

of the QA output when counting DOWN. This LOW level

overflow carry pulse can be used to enable successively

cascaded stages. Transitions at the enable P or T inputs

are allowed regardless of the level of the clock input.

The control functions for these counters are fully synchro-

nous. Changes at control inputs (enable P, enable T, load,

up/down) which modify the operating mode have no effect

until clocking occurs. The function of the counter (whether

enabled, disabled, loading or counting) will be dictated

solely by the conditions meeting the stable setup and hold

times.

Ordering Code:

Order Number Package Number

Package Description

DM74AS169AM

DM74AS169AN

M16A

N16E

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

DS006292

www.fairchildsemi.com

12 3 4 5 6

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DM74AS169AN 替代型号

型号	品牌	替代类型	描述	数据表
DM74AS169AMX	FAIRCHILD	完全替代	Synchronous Up/Down Counter
DM74AS169AM	FAIRCHILD	完全替代	Synchronous 4-Bit Binary Up/Down Counter
SN74AS169ADR	TI	类似代替	SYNCHRONOUS 4-BIT UP/DOWN BINARY COUNTERS

与DM74AS169AN相关器件

型号	品牌	获取价格	描述	数据表
DM74AS169AN/A+	ETC	获取价格	Synchronous Up/Down Counter
DM74AS169AN/B+	ETC	获取价格	Synchronous Up/Down Counter
DM74AS169J/A+	ETC	获取价格	Synchronous Up/Down Counter
DM74AS169N/A+	ETC	获取价格	Synchronous Up/Down Counter
DM74AS169N/B+	ETC	获取价格	Synchronous Up/Down Counter
DM74AS174J	TI	获取价格	IC,FLIP-FLOP,HEX,D TYPE,AS-TTL,DIP,16PIN,CERAMIC
DM74AS174J/A+	ETC	获取价格	Hex D-Type Flip-Flop
DM74AS174N	TI	获取价格	AS SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDIP16, 0.300 INCH, PLASTIC,
DM74AS174N/A+	ETC	获取价格	Hex D-Type Flip-Flop
DM74AS174N/B+	TI	获取价格	IC,FLIP-FLOP,HEX,D TYPE,AS-TTL,DIP,16PIN,PLASTIC

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