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SN74LS168N: 产品描述Decade Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDIP16, PLASTIC, DIP-16; 产品类别逻辑逻辑; 文件大小270KB，共8页; 制造商Motorola ( NXP ); 官网地址https://www.nxp.com

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SN74LS168N概述

Decade Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDIP16, PLASTIC, DIP-16

SN74LS168N规格参数

参数名称	属性值
是否Rohs认证	不符合
零件包装代码	DIP
包装说明	DIP, DIP16,.3
针数	16
Reach Compliance Code	unknown
其他特性	TCO OUTPUT
计数方向	BIDIRECTIONAL
系列	LS
JESD-30 代码	R-PDIP-T16
JESD-609代码	e0
长度	19.175 mm
负载电容（CL）	15 pF
负载/预设输入	YES
逻辑集成电路类型	DECADE COUNTER
最大频率@ Nom-Sup	25000000 Hz
最大I（ol）	0.008 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
输出特性	3-STATE
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）	34 mA
传播延迟（tpd）	23 ns
认证状态	Not Qualified
座面最大高度	4.44 mm
最大供电电压 (Vsup)	5.25 V
最小供电电压 (Vsup)	4.75 V
标称供电电压 (Vsup)	5 V
表面贴装	NO
技术	TTL
温度等级	COMMERCIAL
端子面层	Tin/Lead (Sn/Pb)
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	25 MHz
Base Number Matches	1

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BCD DECADE/MODULO

16 BINARY SYNCHRONOUS

BI-DIRECTIONAL COUNTERS

The SN54 / 74LS168 and SN54 / 74LS169 are fully synchronous 4-stage

up/down counters featuring a preset capability for programmable operation,

carry lookahead for easy cascading and a U/ D input to control the direction

of counting. The SN54 / 74LS168 counts in a BCD decade (8, 4, 2, 1)

sequence, while the SN54 / 74LS169 operates in a Modulo 16 binary

sequence. All state changes, whether in counting or parallel loading, are

initiated by the LOW-to-HIGH transition of the clock.

SN54/74LS168

SN54/74LS169

BCD DECADE/ MODULO

16 BINARY SYNCHRONOUS

BI-DIRECTIONAL COUNTERS

LOW POWER SCHOTTKY

•

Low Power Dissipation 100 mW Typical

High-Speed Count Frequency 30 MHz Typical

Fully Synchronous Operation

Full Carry Lookahead for Easy Cascading

Single Up / Down Control Input

Positive Edge-Trigger Operation

Input Clamp Diodes Limit High-Speed Termination Effects

J SUFFIX

CERAMIC

CASE 620-09

CONNECTION DIAGRAM DIP

(TOP VIEW)

CET

N SUFFIX

PLASTIC

CASE 648-08

NOTE:

The Flatpak version

has the same pinouts

(Connection Diagram) as

the Dual In-Line Package.

U/D

CEP

GND

D SUFFIX

SOIC

CASE 751B-03

ORDERING INFORMATION

SN54LSXXXJ

SN74LSXXXN

SN74LSXXXD

Ceramic

Plastic

SOIC

PIN NAMES

(Note a)

HIGH

LOW

0.25 U.L.

0.5 U.L.

0.25 U.L.

5 (2.5) U.L.

CEP

CET

U/D

P0–P3

Q0–Q3

Count Enable Parallel (Active LOW) Input

Count Enable Trickle (Active LOW) Input

Clock Pulse (Active positive going edge) Input

Parallel Enable (Active LOW) Input

Up-Down Count Control Input

Parallel Data Inputs

Flip-Flop Outputs

Terminal Count (Active LOW) Output

0.5 U.L.

1.0 U.L.

0.5 U.L.

10 U.L.

LOGIC SYMBOL

U/D

CEP

CET

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.

= PIN 16

GND = PIN 8

FAST AND LS TTL DATA

5-302

SN74LS168N相似产品对比

	SN74LS168N	SN74LS168D	SN74LS169N	SN74LS169D
描述	Decade Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDIP16, PLASTIC, DIP-16	Decade Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDSO16, SOIC-16	Binary Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDIP16, PLASTIC, DIP-16	Binary Counter, LS Series, Synchronous, Positive Edge Triggered, 4-Bit, Bidirectional, TTL, PDSO16, SOIC-16
包装说明	DIP, DIP16,.3	SOP, SOP16,.25	DIP, DIP16,.3	SOP, SOP16,.25
Reach Compliance Code	unknown	unknown	unknown	unknown
其他特性	TCO OUTPUT	TCO OUTPUT	TCO OUTPUT	TCO OUTPUT
计数方向	BIDIRECTIONAL	BIDIRECTIONAL	BIDIRECTIONAL	BIDIRECTIONAL
系列	LS	LS	LS	LS
JESD-30 代码	R-PDIP-T16	R-PDSO-G16	R-PDIP-T16	R-PDSO-G16
JESD-609代码	e0	e0	e0	e0
长度	19.175 mm	9.9 mm	19.175 mm	9.9 mm
负载电容（CL）	15 pF	15 pF	15 pF	15 pF
负载/预设输入	YES	YES	YES	YES
逻辑集成电路类型	DECADE COUNTER	DECADE COUNTER	BINARY COUNTER	BINARY COUNTER
最大频率@ Nom-Sup	25000000 Hz	25000000 Hz	25000000 Hz	25000000 Hz
最大I（ol）	0.008 A	0.008 A	0.008 A	0.008 A
工作模式	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS	SYNCHRONOUS
位数	4	4	4	4
功能数量	1	1	1	1
端子数量	16	16	16	16
最高工作温度	70 °C	70 °C	70 °C	70 °C
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	DIP	SOP	DIP	SOP
封装等效代码	DIP16,.3	SOP16,.25	DIP16,.3	SOP16,.25
封装形状	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
封装形式	IN-LINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE
电源	5 V	5 V	5 V	5 V
最大电源电流（ICC）	34 mA	34 mA	34 mA	34 mA
传播延迟（tpd）	23 ns	23 ns	23 ns	23 ns
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified
座面最大高度	4.44 mm	1.75 mm	4.44 mm	1.75 mm
最大供电电压 (Vsup)	5.25 V	5.25 V	5.25 V	5.25 V
最小供电电压 (Vsup)	4.75 V	4.75 V	4.75 V	4.75 V
标称供电电压 (Vsup)	5 V	5 V	5 V	5 V
表面贴装	NO	YES	NO	YES
技术	TTL	TTL	TTL	TTL
温度等级	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
端子面层	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
端子形式	THROUGH-HOLE	GULL WING	THROUGH-HOLE	GULL WING
端子节距	2.54 mm	1.27 mm	2.54 mm	1.27 mm
端子位置	DUAL	DUAL	DUAL	DUAL
触发器类型	POSITIVE EDGE	POSITIVE EDGE	POSITIVE EDGE	POSITIVE EDGE
宽度	7.62 mm	3.9 mm	7.62 mm	3.9 mm
最小 fmax	25 MHz	25 MHz	25 MHz	25 MHz
Base Number Matches	1	1	1	1
是否Rohs认证	不符合	不符合	-	不符合

SN74LS168N

SN74LS168N概述

SN74LS168N规格参数

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