74AC161

更新时间： 2024-01-28 10:51:56

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		计数器
页数	文件大小	规格书
12页	103K
描述
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER

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数据手册

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74AC161 数据手册

74AC161

SYNCHRONOUS PRESETTABLE 4-BIT COUNTER

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HIGH SPEED:

_MAX=125MHz (TYP.)atV_CC=5V

LOW POWER DISSIPATION:

I_CC=8 µA (MAX.) at T_A=25 ^oC

HIGH NOISEIMMUNITY:

V_NIH= V_NIL=28% V_CC(MIN.)

50Ω TRANSMISSIONLINEDRIVING

CAPABILITY

SYMMETRICAL OUTPUT IMPEDANCE:

|I_OH| = I_OL= 24 mA (MIN)

BALANCEDPROPAGATIONDELAYS:

t_PLHt_PHL

OPERATING VOLTAGERANGE:

(Plastic Package)

(Micro Package)

ORDER CODES :

74AC161B

74AC161M

reset, parallel load, count-up and hold. Four

control inputs, Master Reset (CLEAR), Parallel

Enable Input (LOAD), Count Enable Input (PE)

and Count Enable Carry Input (TE), determine

the mode of operation as shown in the Truth

Table. A LOW signal on CLEAR overrides

counting and parallel loading and sets all outputs

on LOW state. A LOW signal on LOAD overrides

counting and allows information on Parallel Data

Qn inputs to be loaded into the flip-flops on the

next rising edge of CLOCK. With LOAD and

CLEAR, PE and TE permit counting when both

are HIGH. Conversely, a LOW signal on either

PE and TE inhibits counting.

V_CC(OPR)= 2V to 6V

PIN AND FUNCTION COMPATIBLEWITH

74 SERIES161

IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The AC161

high-speed CMOS

SYNCRONOUS PRESETTABLE COUNTER

fabricated with sub-micron silicon gate and

double-layer metal wiring C²MOS technology.It is

ideal for low power applications mantaining high

speed operation similar to eqivalent Bipolar

Schottky TTL. It is a 4 bit binary counter with

AsynchronousClear.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

The circuit have four fundamental modes of

operation, in order of preference: synchronous

PIN CONNECTION AND IEC LOGIC SYMBOLS

1/12

December 1998

12 3 4 5 6 7...12

中文翻译

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与74AC161相关器件

型号	品牌	获取价格	描述	数据表
74AC161_03	FAIRCHILD	获取价格	Synchronous Presettable Binary Counter
74AC161B	STMICROELECTRONICS	获取价格	SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
74AC161DC	FAIRCHILD	获取价格	Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
74AC161FC	FAIRCHILD	获取价格	Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
74AC161FCQR	FAIRCHILD	获取价格	Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
74AC161FCT	FAIRCHILD	获取价格	Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
74AC161FCX	FAIRCHILD	获取价格	暂无描述
74AC161FCXR	FAIRCHILD	获取价格	Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
74AC161LC	FAIRCHILD	获取价格	Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
74AC161M	STMICROELECTRONICS	获取价格	SYNCHRONOUS PRESETTABLE 4-BIT COUNTER