M74HC648B1R

更新时间： 2025-09-27 22:15:35

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		总线驱动器总线收发器触发器逻辑集成电路光电二极管输入元件
页数	文件大小	规格书
12页	204K
描述
HC648 OCTAL BUS TRANSCEIVER/REGISTER 3-STATE, INV. HC646 OCTAL BUS TRANSCEIVER/REGISTER 3-STATE

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技术参数
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M74HC648B1R 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	PLASTIC, DIP-24	针数：	24
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.5	Is Samacsys：	N
其他特性：	DIRECTION CONTROL; SELECT INPUT FOR MULTIPLEXED TRANSMISSION OF REGISTERED OR REAL TIME DATA	控制类型：	INDEPENDENT CONTROL
计数方向：	BIDIRECTIONAL	系列：	HC/UH
JESD-30 代码：	R-PDIP-T24	负载电容（CL）：	150 pF
逻辑集成电路类型：	REGISTERED BUS TRANSCEIVER	最大I（ol）：	0.006 A
位数：	8	功能数量：	1
端口数量：	2	端子数量：	24
最高工作温度：	125 °C	最低工作温度：	-55 °C
输出特性：	3-STATE	输出极性：	INVERTED
封装主体材料：	PLASTIC/EPOXY	封装代码：	DIP
封装等效代码：	DIP24,.6	封装形状：	RECTANGULAR
封装形式：	IN-LINE	包装方法：	TUBE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	2/6 V
Prop。Delay @ Nom-Sup：	60 ns	传播延迟（tpd）：	325 ns
认证状态：	Not Qualified	子类别：	Bus Driver/Transceivers
最大供电电压 (Vsup)：	6 V	最小供电电压 (Vsup)：	2 V
标称供电电压 (Vsup)：	4.5 V	表面贴装：	NO
技术：	CMOS	温度等级：	MILITARY
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
触发器类型：	POSITIVE EDGE	宽度：	15.24 mm
Base Number Matches：	1

M74HC648B1R 数据手册

M74HC646

M74HC648

HC646 OCTAL BUS TRANSCEIVER/REGISTER (3-STATE)

HC648 OCTAL BUS TRANSCEIVER/REGISTER (3-STATE, INV.)

HIGH SPEED

f_MAX= 73 MHz (TYP.) AT V_CC= 5 V

LOW POWER DISSIPATION

I_CC= 4 µA (MAX.) AT T_A= 25 °C

HIGH NOISE IMMUNITY

V_NIH= V_NIL= 28 % V_CC(MIN.)

OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS

SYMMETRICAL OUTPUT IMPEDANCE

I_OH= I_OL= 6 mA (MIN.)

BALANCED PROPAGATION DELAYS

t_PLH= t_PHL

WIDE OPERATING VOLTAGE RANGE

B1R

(Plastic Package)

M1R

(Micro Package)

ORDER CODES :

M74HCXXXM1R

M74HCXXXB1R

V_CC(OPR) = 2 V TO 6 V

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS646/648

DESCRIPTION

PIN CONNECTIONS (top view)

The M74HC646/648 are high speed CMOS OCTAL

BUS TRANSCEIVERS AND REGISTERS, (3-

STATE) fabricated in silicon gate C²MOS technol-

ogy. They have the same high speed performance

of LSTTL combined with trueCMOS low power con-

sumption.

These devices consist of bus transceiver circuits

with 3-state output, D-type flip-flops, and control cir-

cuitry arranged for multiplexed transmission of data

directly from the input bus or from the internal reg-

isters. Data on the Aor B bus will be clocked into the

registers on the low-to-high transition of the appro-

priate clock pin (Clock AB- or Clock BA). Enable(G)

and direction (DIR) pins are provided to control the

transceiver functions. In the transceiver mode, data

present at the high-impedance port may be stored

in either register or in both.

INPUT AND OUTPUT EQUIVALENT CIRCUIT

The select controls (Select AB select BA) can multi-

plex stored and real-time (transparent mode) data.

The direction control determines which bus will re-

ceive data when enable G is active (low).

GAB, GAB, CAB,

SAB, SBA, CBA

A, B

In the isolation mode (enable G high), ”A” data may

be stored in one register and/or ”B” data may be

storedin the other register. When anoutput function

is disabled, the input function is still enabled and

may be used to store and transmit data. Only one

of the two buses, A or B, may be driven at a time.

All inputs are equipped with protection circuits

October 1993

1/12

12 3 4 5 6 7...12

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与M74HC648B1R相关器件

型号	品牌	获取价格	描述	数据表
M74HC648DWP	MITSUBISHI	获取价格	Registered Bus Transceiver, 1-Func, 8-Bit, Inverted Output, CMOS, PDSO24
M74HC648F1	STMICROELECTRONICS	获取价格	HC/UH SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, CDIP24, FRIT SEALED, CERAMIC,
M74HC648FP	MITSUBISHI	获取价格	Registered Bus Transceiver, 1-Func, 8-Bit, Inverted Output, CMOS, PDSO24
M74HC648M1	STMICROELECTRONICS	获取价格	HC/UH SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24, MICRO, PLASTIC, DIP-2
M74HC648M1R	STMICROELECTRONICS	获取价格	HC648 OCTAL BUS TRANSCEIVER/REGISTER 3-STATE, INV. HC646 OCTAL BUS TRANSCEIVER/REGISTER 3-
M74HC648P	MITSUBISHI	获取价格	Registered Bus Transceiver, 1-Func, 8-Bit, Inverted Output, CMOS, PDIP24
M74HC648RM13TR	STMICROELECTRONICS	获取价格	HC/UH SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24, SOP-24
M74HC648TTR	STMICROELECTRONICS	获取价格	HC/UH SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDSO24, TSSOP-24
M74HC651	STMICROELECTRONICS	获取价格	HC652 OCTAL BUS TRANSCEIVER/REGISTER 3-STATE HC651 OCTAL BUS TRANSCEIVER/REGISTER 3-STATE,
M74HC651B1N	STMICROELECTRONICS	获取价格	HC/UH SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDIP24, PLASTIC, DIP-24

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