參數(shù)資料
型號: MC74LVQ646DW
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: LOW-VOLTAGE CMOS OCTAL TRANSCEIVER/ REGISTERED TRANSCEIVER
中文描述: LVQ SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24
封裝: PLASTIC, SOIC-24
文件頁數(shù): 1/10頁
文件大小: 230K
代理商: MC74LVQ646DW
SEMICONDUCTOR TECHNICAL DATA
1
REV 0
Motorola, Inc. 1995
12/95
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The MC74LVQ646 is a high performance, non–inverting octal
transceiver/registered transceiver operating from a 2.7 to 3.6V supply.
High impedance TTL compatible inputs significantly reduce current
loading to input drivers while TTL compatible outputs offer improved
switching noise performance. The MC74LVQ646 is suitable for memory
address driving and all TTL level bus oriented transceiver applications.
Data on the A or B bus will be clocked into the registers as the
appropriate clock pin goes from a LOW–to–HIGH logic level. Output
Enable (OE) and DIR pins are provided to control the transceiver outputs.
In the transceiver mode, data present at the high impedance port may be
stored in either the A or the B register or in both. The select controls (SBA,
SAB) can multiplex stored and real–time (transparent mode) data. The
direction control (DIR) determines which bus will receive data when the
enable OE is active LOW. In the isolation mode (OE HIGH), A data may
be stored in the B register or B data may be stored in the A register. Only
one of the two buses, A or B, may be driven at one time.
Designed for 2.7 to 3.6V VCC Operation – Ideal for Low Power/Low
Noise Applications
Guaranteed Simultaneous Switching Noise Level and Dynamic
Threshold Performance
Guaranteed Skew Specifications
Guaranteed Incident Wave Switching into 75
Low Static Supply Current (10
μ
A) Substantially Reduces System Power
Requirements
Latchup Performance Exceeds 500mA
ESD Performance: Human Body Model >2000V
Pinout: 24–Lead Package
(Top View)
23
24
22
21
20
19
18
2
1
3
4
5
6
7
VCC
17
8
16
9
15
10
CBA
SBA
OE
B0
B1
B2
B3
B4
B5
CAB
SAB
DIR
A0
A1
A2
A3
A4
A5
A6
14
11
13
12
B6
B7
A7
GND
LVQ
DW SUFFIX
PLASTIC SOIC
CASE 751E–04
DT SUFFIX
PLASTIC TSSOP
CASE 948H–01
24
1
24
1
SD SUFFIX
PLASTIC SSOP
CASE 940D–03
24
1
LOW–VOLTAGE CMOS
OCTAL TRANSCEIVER/
REGISTERED TRANSCEIVER
PIN NAMES
Function
Side A Inputs/Outputs
Side B Inputs/Outputs
Clock Pulse Inputs
Select Control Inputs
Output Enable Inputs
Pins
A0–A7
B0–B7
CAB, CBA
SAB, SBA
DIR, OE
相關PDF資料
PDF描述
MC74LVQ646SD LOW-VOLTAGE CMOS OCTAL TRANSCEIVER/ REGISTERED TRANSCEIVER
MC74LVQ652 Power Factor Correction (PFC) and PWM Controller Combo; Package: DIP; No of Pins: 16; Container: Rail
MC74LVQ652DT Power Factor Correction (PFC) and PWM Controller Combo; Package: SOIC; No of Pins: 16; Container: Rail
MC74LVQ652DW Power Factor Correction (PFC) and PWM Controller Combo; Package: SOIC; No of Pins: 16; Container: Tape & Reel
MC74LVQ652SD Power Factor Correction (PFC) and PWM Controller Combo
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