MC74HC299N 데이터 시트보기 (PDF) - Motorola => Freescale

부품명

상세내역

일치하는 목록

MC74HC299N

8-Bit Bidirectional Universal Shift Register with Parallel I/O

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

8-Bit Bidirectional Universal

Shift Register with Parallel I/O

High–Performance Silicon–Gate CMOS

The MC74HC299 is identical in pinout to the LS299. The device inputs are

compatible with standard CMOS outputs; with pullup resistors, they are

compatible with LSTTL outputs.

The HC299 features a multiplexed parallel input/output data port to

achieve full 8–bit handling in a 20 pin package. Due to the large output drive

capability and the 3–state feature, this device is ideally suited for interface

with bus lines in a bus–oriented system.

Two Mode–Select inputs and two Output Enable inputs are used to

choose the mode of operation as listed in the Function Table. Synchronous

parallel loading is accomplished by taking both Mode–Select lines, S1 and

S2, high. This places the outputs in the high–impedance state, which permits

data applied to the data port to be clocked into the register. Reading out of

the register can be accomplished when the outputs are enabled. The

active–low asynchronous Reset overrides all other inputs.

• Output Drive Capability: 15 LSTTL Loads for QA through QH

10 LSTTL Loads for QA′ and QH′

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2 to 6 V

• Low Input Current: 1 µA

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance with the Requirements Defined by JEDEC Standard

No. 7A

• Chip Complexity: 398 FETs or 99.5 Equivalent Gates

LOGIC DIAGRAM

SERIAL

DATA

INPUTS

SA (SHIFT RIGHT) 11

SH (SHIFT LEFT) 18

CLOCK 12

RESET 9

MODE

SELECT

OUTPUT

S1

S2

OE1

1

19

2

ENABLES OE2 3

7

13

6

14

5

15

4

16

8

17

PA/QA

PB/QB

PC/QC

PD/QD

PE/QE

PF/QF

PG/QG

PH/QH

QA′

QH′

3–STATE

PARALLEL DATA PORT

(INPUTS/OUTPUTS)

SERIAL DATA

OUTPUTS

PIN 20 = VCC

PIN 10 = GND

MC74HC299

20

1

20

1

N SUFFIX

PLASTIC PACKAGE

CASE 738–03

DW SUFFIX

SOIC PACKAGE

CASE 751D–04

ORDERING INFORMATION

MC74HCXXXN

Plastic

MC74HCXXXDW SOIC

PIN ASSIGNMENT

S1 1

OE1 2

OE2 3

PG/QG 4

PE/QE 5

PC/QC 6

PA/QA 7

QA′ 8

RESET 9

GND 10

20 VCC

19 S2

18 SH

17 QH′

16 PH/QH

15 PF/QF

14 PD/QD

13 PB/QB

12 CLOCK

11 SA

10/95

© Motorola, Inc. 1995

3–1

REV 6

Share Link: