Datasheet > 74LS92

74LS92

更新时间： 2024-11-06 22:53:19

品牌	Logo	应用领域
安森美 - ONSEMI		计数器
页数	文件大小	规格书
6页	84K
描述
DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER

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74LS92 数据手册

SN54/74LS90

SN54/74LS92

SN54/74LS93

DECADE COUNTER;

DIVIDE-BY-TWELVE COUNTER;

4-BIT BINARY COUNTER

DECADE COUNTER;

DIVIDE-BY-TWELVE COUNTER;

4-BIT BINARY COUNTER

The SN54/74LS90, SN54/74LS92 and SN54/74LS93 are high-speed

4-bit ripple type counters partitioned into two sections. Each counter has a di-

vide-by-two section and either a divide-by-five (LS90), divide-by-six (LS92) or

divide-by-eight (LS93) section which are triggered by a HIGH-to-LOW transi-

tion on the clock inputs. Each section can be used separately or tied together

(Q to CP) to form BCD, bi-quinary, modulo-12, or modulo-16 counters. All of

the counters have a 2-input gated Master Reset (Clear), and the LS90 also

has a 2-input gated Master Set (Preset 9).

LOW POWER SCHOTTKY

• Low Power Consumption . . . Typically 45 mW

• High Count Rates . . . Typically 42 MHz

• Choice of Counting Modes . . . BCD, Bi-Quinary, Divide-by-Twelve,

Binary

J SUFFIX

CERAMIC

CASE 632-08

• Input Clamp Diodes Limit High Speed Termination Effects

PIN NAMES

LOADING (Note a)

N SUFFIX

HIGH

LOW

PLASTIC

CASE 646-06

Clock (Active LOW going edge) Input to

÷2 Section

0.5 U.L.

1.5 U.L.

Clock (Active LOW going edge) Input to

÷5 Section (LS90), ÷6 Section (LS92)

0.5 U.L.

2.0 U.L.

1.0 U.L.

Clock (Active LOW going edge) Input to

÷8 Section (LS93)

D SUFFIX

SOIC

CASE 751A-02

MR , MR

MS , MS

Master Reset (Clear) Inputs

0.5 U.L.

10 U.L.

0.25 U.L.

5 (2.5) U.L.

Master Set (Preset-9, LS90) Inputs

Output from ÷2 Section (Notes b & c)

Outputs from ÷5 (LS90), ÷6 (LS92),

÷8 (LS93) Sections (Note b)

Q , Q , Q

1 3

ORDERING INFORMATION

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)

b. Temperature Ranges.

SN54LSXXJ

SN74LSXXN

SN74LSXXD

Ceramic

Plastic

SOIC

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

d. To insure proper operation the rise (t ) and fall time (t ) of the clock must be less than 100 ns.

LOGIC SYMBOL

LS92

LS90

LS93

Q Q Q Q

0 1 2 3

Q Q Q Q

0 1 2 3

Q Q Q Q

0 1 2 3

1 2

8 11

12 11

= PIN 5

GND = PIN 10

NC = PINS 2, 3, 4, 13

GND = PIN 10

NC = PIN 4, 6, 7, 13

GND = PIN 10

NC = PINS 4, 13

FAST AND LS TTL DATA

5-1

12 3 4 5 6

中文翻译

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与74LS92相关器件

型号	品牌	获取价格	描述	数据表
74LS92DC	TI	获取价格	DIVIDE-BY-TWELVE COUNTER
74LS92DCQR	FAIRCHILD	获取价格	Divide By 12 Counter, Asynchronous, Up Direction, TTL, CDIP14,
74LS92FC	TI	获取价格	DIVIDE-BY-TWELVE COUNTER
74LS92FCQM	FAIRCHILD	获取价格	Divide By 12 Counter, Asynchronous, Up Direction, TTL, CDFP14,
74LS92FCQR	FAIRCHILD	获取价格	Divide By 12 Counter, Asynchronous, Up Direction, TTL, CDFP14,
74LS92N	RAYTHEON	获取价格	Divide By 12 Counter, Asynchronous, Up Direction, TTL, PDIP14,
74LS92PC	TI	获取价格	DIVIDE-BY-TWELVE COUNTER
74LS92PCQR	FAIRCHILD	获取价格	Divide By 12 Counter, Asynchronous, Up Direction, TTL, PDIP14,
74LS93	MOTOROLA	获取价格	DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER
74LS93	ONSEMI	获取价格	DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER

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