DM74ALS564AWMX [FAIRCHILD]

Octal D-Type Flip-Flop ; 八D型触发器\n


型号：	DM74ALS564AWMX
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Octal D-Type Flip-Flop 八D型触发器\n 总线驱动器总线收发器触发器逻辑集成电路光电二极管
文件：	总6页 (文件大小：62K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

September 1986

Revised February 2000

DM74ALS564A

Octal D-Type Edge-Triggered Flip-Flop with

3-STATE Outputs

General Description

Features

■ Switching specifications at 50 pF

These 8-bit registers feature totem-pole 3-STATE outputs

designed specifically for driving highly-capacitive or rela-

tively low-impedance loads. The high-impedance state and

increased high-logic-level drive provide these registers with

the capability of being connected directly to and driving the

bus lines in a bus-organized system without need for inter-

face or pull-up components. They are particularly attractive

for implementing buffer registers, I/O ports, bidirectional

bus drivers, and working registers.

■ Switching specifications guaranteed over full tempera-

ture and V_CCrange

■ Advanced oxide-isolated, ion-implanted Schottky TTL

process

■ 3-STATE buffer-type outputs drive bus lines directly

The eight flip-flops of the DM74ALS564A are edge-trig-

gered inverting D-type flip-flops. On the positive transition

of the clock, the Q outputs will be set to the complement of

the logic states that were set up at the D inputs.

A buffered output control input can be used to place the

eight outputs in either a normal logic state (HIGH or LOW

logic levels) or a high-impedance state. In the high-imped-

ance state the outputs neither load nor drive the bus lines

significantly.

The output control does not affect the internal operation of

the flip-flops. That is, the old data can be retained or new

data can be entered even while the outputs are OFF.

Ordering Code:

Order Number

DM74ALS564AWM

DM74ALS564AN

Package Number

M20B

Package Description

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

N20A

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

DS006225

www.fairchildsemi.com

Function Table

Logic Diagram

Output

Clock

Output

Control

↑

Q₀

L = LOW State

H = HIGH State

X = Don’t Care

↑ = Positive Edge Transition

Z = High Impedance State

= Previous Condition of Q

www.fairchildsemi.com

Absolute Maximum Ratings(Note 1)

Supply Voltage

Input Voltage

Voltage Applied to Disabled Output

5.5V

Note 1: The “Absolute Maximum Ratings” are those values beyond which

the safety of the device cannot be guaranteed. The device should not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the absolute maximum ratings.

The “Recommended Operating Conditions” table will define the conditions

for actual device operation.

Operating Free Air Temperature Range

Storage Temperature Range

Typical θ_JA

0°C to +70°C

−65°C to +150°C

N Package

56.0°C/W

75.0°C/W

M Package

Recommended Operating Conditions

Symbol

Parameter

Min

4.5

Nom

Max

Units

V_CC

V_IH

V_IL

Supply Voltage

5.5

HIGH Level Input Voltage

LOW Level Input Voltage

HIGH Level Output Current

LOW Level Output Current

Clock Frequency

0.8

−2.6

I_OH

I_OL

f_CLOCK

t_W

MHz

15↑

0↑

Width of Clock Pulse

HIGH

LOW

t_SU

t_H

Data Setup Time (Note 3)

Data Hold Time (Note 3)

T_A

Free Air Operating Temperature

°C

Note 2: This product meets application requirements of 500 temperature cycles from −65°C to +150°C.

Note 3: The (↑) arrow indicates the positive edge of the Clock is used for reference.

Electrical Characteristics

over recommended operating free air temperature range. All typical values are measured at V_CC= 5V, T = 25°C.

Symbol

Parameter

Conditions

= 4.5V, I = −18 mA

Min

Typ

Max

Units

Input Clamp Voltage

HIGH Level

−1.2

= 4.5V

= Max

2.4

3.2

Output Voltage

= V Max

= 4.5V to 5.5V

= 4.5V

= −400 µA

= 12 mA

= 24 mA

− 2

LOW Level

0.25

0.35

0.4

0.5

Output Voltage

= 2V

Input Current @ Maximum

Input Voltage

= 5.5V, V = 7V

0.1

HIGH Level Input Current

LOW Level Input Current

Output Drive Current

OFF-State Output Current

HIGH Level Voltage Applied

OFF-State Output Current

LOW Level Voltage Applied

Supply Current

= 5.5V, V = 2.7V

µA

= 5.5V, V = 0.4V

−0.2

−112

= 5.5V, V = 2.25V

−30

= 5.5V, V = 2V

OZH

µA

= 2.7V

= 5.5V, V = 2V

OZL

−20

= 0.4V

= 5.5V

Outputs HIGH

Outputs LOW

Outputs OPEN

Outputs Disabled

www.fairchildsemi.com

Switching Characteristics

over recommended operating free air temperature range

Symbol

Parameter

Conditions

= 4.5V to 5.5V

From

Min

Max

Units

Maximum Clock Frequency

Propagation Delay Time

LOW-to-HIGH Level Output

Propagation Delay Time

HIGH-to-LOW Level Output

Output Enable Time

MHz

MAX

= 500Ω

= 50 pF

PLH

Clock

Any Q

PHL

Clock

Output

Control

Output

Control

Output

Control

Output

Control

PZH

to HIGH Level Output

Output Enable Time

PZL

to LOW Level Output

Output Disable Time

PHZ

from HIGH Level Output

Output Disable Time

PLZ

from LOW Level Output

www.fairchildsemi.com

Physical Dimensions inches (millimeters) unless otherwise noted

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

Package Number M20B

www.fairchildsemi.com

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Package Number N20A

Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and

Fairchild reserves the right at any time without notice to change said circuitry and specifications.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD

SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the

body, or (b) support or sustain life, and (c) whose failure

to perform when properly used in accordance with

instructions for use provided in the labeling, can be rea-

sonably expected to result in a significant injury to the

user.

2. A critical component in any component of a life support

device or system whose failure to perform can be rea-

sonably expected to cause the failure of the life support

device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com

相关型号：