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SN54AS162FK

更新时间： 2024-10-01 13:00:55

品牌	Logo	应用领域
德州仪器 - TI		计数器
页数	文件大小	规格书
11页	162K
描述
AS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, CQCC20, CERAMIC, LCC-20

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SN54AS162FK 技术参数

生命周期：	Obsolete	零件包装代码：	QLCC
包装说明：	QCCN,	针数：	20
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.77	其他特性：	TCO OUTPUT
计数方向：	UP	系列：	AS
JESD-30 代码：	S-CQCC-N20	长度：	8.89 mm
负载电容（CL）：	50 pF	负载/预设输入：	YES
逻辑集成电路类型：	DECADE COUNTER	工作模式：	SYNCHRONOUS
位数：	4	功能数量：	1
端子数量：	20	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	CERAMIC, METAL-SEALED COFIRED
封装代码：	QCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER	最大电源电流（ICC）：	53 mA
传播延迟（tpd）：	14 ns	认证状态：	Not Qualified
座面最大高度：	2.03 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：	YES	技术：	TTL
温度等级：	MILITARY	端子形式：	NO LEAD
端子节距：	1.27 mm	端子位置：	QUAD
触发器类型：	POSITIVE EDGE	宽度：	8.89 mm
最小 fmax：	65 MHz	Base Number Matches：	1

SN54AS162FK 数据手册

SN54ALS160B THRU SN54ALS163B, SN54AS160 THRU SN54AS163

SN74ALS160B THRU SN74ALS163B, SN74AS160 THRU SN74AS163

SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS

SDAS024A – D2661, APRIL 1982 – REVISED MAY 1986

SN54ALS’, SN54AS’ . . . J PACKAGE

SN74ALS’, SN74AS’ . . . D OR N PACKAGE

• Internal Look-Ahead for Fast Counting

• Carry Output for n-Bit Cascading

• Synchronous Counting

(TOP VIEW)

• Synchronously Programmable

RCO

ENT

LOAD

CLR

CLK

• Package Options include Plastic Small

Outline Packages, Ceramic Chip Carriers,

and Standard Plastic and Ceramic 300-mil

DIPs

• Dependable Texas Instruments Quality and

ENP

GND

Reliability

description

SN54ALS’, SN54AS’ . . . FK PACKAGE

(TOP VIEW)

These synchronous, presettable counters feature

an internal carry look-ahead for application in

high-speed counting designs. The ’ALS160B,

’ALS162B, ’AS160, and ’AS162 are decade

counters, and the ’ALS161B, ’ALS163B, ’AS161,

and ’AS163 are 4-bit binary counters. Synchro-

nous operation is provided by having all flip-flops

clocked simultaneously so that the outputs

change coincident with each other when so

instructed by the count-enable inputs and internal

gating. This mode of operation eliminates the

output counting spikes that are normally asso-

ciated with asynchronous (ripple clock)

counters. A buffered clock input triggers the four

flip-flops on the rising (positive-going) edge of the

clock input waveform.

20 19

9 10 11 12 13

NC–No internal connection

These counters are fully programmable; that is, they may be preset to any number between 0 and 9, or 15. As

presetting is synchronous, setting up a low level at the load input disables the counter and causes the outputs

to agree with the setup data after the next clock pulse regardless of the levels of the enable inputs.

Theclearfunctionforthe’ALS160B, ’ALS161B, ’AS160, and’AS161isasynchronousandalowlevelattheclear

input sets all four of the flip-flop outputs low regardless of the levels of the clock, load, or enable inputs. This

synchronous clear allows the count length to be modified easily by decoding the Q outputs for the maximum

count desired. The active-low output of the gate used for decoding is connected to the clear input to

synchronously clear the counter to 0000 (LLLL).

The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without

additional gating. Instrumental in accomplishing this function are two count-enable inputs and a ripple carry

output. Both count-enable inputs (ENP and ENT) must be high to count, and ENT is fed forward to enable the

ripple carry output. The ripple carry output (RCO) thus enabled will produce a high-level pulse while the count

is maximum (9 or 15 with Q high). This high-level overflow ripple carry pulse can be used to enable successive

cascaded stages. Transitions at the ENP or ENT are allowed regardless of the level of the clock input.

These counters feature a fully independent clock circuit. Changes at control inputs (ENP, ENT, or LOAD) that

will modify the operating mode have no effect on the contents of the counter 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.

The SN54ALS160B through SN54ALS163B and SN54AS160 through SN54AS163 are characterized for

operation over the full military temperature range of –55°C to 125°C. The SN74ALS160B through

SN74ALS163B and SN74AS160 through SN74AS163 are characterized for operation from 0°C to 70°C.

5BASIC

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...11

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与SN54AS162FK相关器件

型号	品牌	获取价格	描述	数据表
SN54AS162J	ROCHESTER	获取价格	AS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, CDIP16, 0.300 INCH, CERAMI
SN54AS162J-00	TI	获取价格	AS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, CDIP16
SN54AS163	TI	获取价格	SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
SN54AS163FH	TI	获取价格	IC,COUNTER,UP,4-BIT BINARY,AS-TTL,LLCC,20PIN,CERAMIC
SN54AS163FH-00	TI	获取价格	AS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CQCC20
SN54AS163FK	TI	获取价格	SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
SN54AS163FKR	TI	获取价格	AS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CQCC20, CERAMIC, CC-20
SN54AS163J	TI	获取价格	SYNCHRONOUS 4-BIT DECADE AND BINARY COUNTERS
SN54AS163J-00	TI	获取价格	AS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CDIP16
SN54AS168FH-00	TI	获取价格	AS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, CQCC20

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