SN54HC193FKR

更新时间： 2024-09-15 13:13:43

品牌	Logo	应用领域
德州仪器 - TI		计数器时钟
页数	文件大小	规格书
9页	145K
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SN54HC193FKR 数据手册

SN54HC193, SN74HC193

4-BIT SYNCHRONOUS UP/DOWN COUNTERS

(DUAL CLOCK WITH CLEAR)

SCLS122B – DECEMBER 1982 – REVISED MAY 1997

SN54HC193 . . . J OR W PACKAGE

SN74HC193 . . . D OR N PACKAGE

(TOP VIEW)

Look-Ahead Circuitry Enhances Cascaded

Counters

Fully Synchronous in Count Modes

Parallel Asynchronous Load for Modulo-N

Count Lengths

CLR

Asynchronous Clear

DOWN

Package Options Include Plastic

Small-Outline (D) and Ceramic Flat (W)

Packages, Ceramic Chip Carriers (FK), and

Standard Plastic (N) and Ceramic (J)

300-mil DIPs

12 CO

LOAD

GND

description

SN54HC193 . . . FK PACKAGE

(TOP VIEW)

The ’HC193 are 4-bit synchronous, reversible,

up/down binary counters. Synchronous operation

is provided by having all flip-flops clocked

simultaneously so that the outputs change

coincidentally with each other when so instructed

by the steering logic. This mode of operation

eliminates the output counting spikes normally

associated with asynchronous (ripple-clock)

counters.

20 19

CLR

DOWN

15 CO

9 10 11 12 13

LOAD

The outputs of the four flip-flops are triggered on

a low-to-high-level transition of either count

(clock) input (UP or DOWN). The direction of

counting is determined by which count input is

pulsed while the other count input is high.

NC – No internal connection

All four counters are fully programmable; that is, each output may be preset to either level by placing a low on

the load (LOAD) input and entering the desired data at the data inputs. The output changes to agree with the

data inputs independently of the count pulses. This feature allows the counters to be used as modulo-N dividers

by simply modifying the count length with the preset inputs.

A clear (CLR) input has been provided that forces all outputs to the low level when a high level is applied. The

clear function is independent of the count and LOAD inputs.

These counters were designed to be cascaded without the need for external circuitry. The borrow (BO) output

produces a low-level pulse while the count is zero (all outputs low) and DOWN is low. Similarly, the carry (CO)

output produces a low-level pulse while the count is maximum (9 or 15) and UP is low. The counters can then

be easily cascaded by feeding BO and CO to DOWN and UP, respectively, of the succeeding counter.

The SN54HC193 is characterized for operation over the full military temperature range of –55°C to 125°C. The

SN74HC193 is characterized for operation from –40°C to 85°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...9

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与SN54HC193FKR相关器件

型号	品牌	获取价格	描述	数据表
SN54HC193J	TI	获取价格	4-BIT SYNCHRONOUS UP/DOWN COUNTERS DUAL CLOCK WITH CLEAR
SN54HC193W	TI	获取价格	4-BIT SYNCHRONOUS UP/DOWN COUNTERS DUAL CLOCK WITH CLEAR
SN54HC193WR	TI	获取价格	暂无描述
SN54HC194FH	ROCHESTER	获取价格	Parallel In Parallel Out
SN54HC194FK-00	ROCHESTER	获取价格	HC/UH SERIES, 4-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, CQ
SN54HC194J-00	TI	获取价格	HC/UH SERIES, 4-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, CD
SN54HC195	TI	获取价格	4-BIT PARALLEL-ACCESS SHIFT REGISTERS
SN54HC195FK-00	TI	获取价格	HC/UH SERIES, 4-BIT RIGHT PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, CQCC20
SN54HC195J	TI	获取价格	4-BIT PARALLEL-ACCESS SHIFT REGISTERS
SN54HC195J-00	TI	获取价格	HC/UH SERIES, 4-BIT RIGHT PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, CDIP16

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