M74HCT688B1R

更新时间： 2024-11-22 22:24:07

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		比较器
页数	文件大小	规格书
10页	245K
描述
8 BIT EQUALITY COMPARATOR

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中文翻译

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数据手册

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M74HCT688B1R 数据手册

M54HCT688

M74HCT688

8 BIT EQUALITY COMPARATOR

HIGH SPEED

t_PD= 17 ns (TYP.) AT V_CC= 5 V

LOW POWER DISSIPATION

I_CC= 4 µA (MAX.) AT T_A= 25 °C

COMPATIBLE WITH TTL OUTPUTS

V_IH= 2V (MIN.) V_IL= 0.8V (MAX)

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

SYMMETRICAL OUTPUT IMPEDANCE

|I_OH| ₌I_OL= 4 mA (MIN.)

BALANCED PROPAGATION DELAYS

t_PLH= t_PHL

PIN AND FUNCTION COMPATIBLE

B1R

(Plastic Package)

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

WITH 54/74LS688

ORDER CODES :

M54HCT688F1R

M74HCT688M1R

M74HCT688B1R

M74HCT688C1R

PIN CONNECTIONS (top view)

DESCRIPTION

The M54/74HCT688 utilizes silicon gate C²MOS

technology to achieve operating speeds equivalent

to LSTTL devices. Along with the low power

dissipation and high noise immunity of standard

C²MOS integrated circuit, it possesses the driving

capability of 10 LSTTL load. The M54/74HCT688

compares bitforbit two8-bit words applied on inputs

P0 - P7 and inputs Q0 - Q7 and indicates whether

or not they are equal. A single active low enable is

provided to facilitate cascading several packages to

enable comparison of words greater than 8 bits.

This integrated circuit has input and output

characteristics that are fully compatible with 54/74

LSTTL logic families. M54/74HCT devices are

designed to directly interface HSC²MOS systems

with TTL and NMOS components. They are also

plug in replacements for LSTTL devices giving a

reduction of power consumption.

All inputs are equipped with protection circuit

against static discharge and transient excess

voltage.

NC =

No Internal

Connection

February 1993

1/10

12 3 4 5 6 7...10

中文翻译

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