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參數資料
| 型號： | MM74HC688MTC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-Bit Magnitude Comparator (Equality Detector) |
| 中文描述： | HC/UH SERIES, 8-BIT MAGNITUDE COMPARATOR, INVERTED OUTPUT, PDSO20 |
| 封裝： | 4.40 MM, MO-153, TSSOP-20 |
| 文件頁數： | 1/6頁 |
| 文件大?。?/td> | 86K |
| 代理商： | MM74HC688MTC |
September 1983
Revised February 1999
M
1999 Fairchild Semiconductor Corporation
DS005018.prf
www.fairchildsemi.com
MM74HC688
8-Bit Magnitude Comparator (Equality Detector)
General Description
The MM74HC688 equality detector utilizes advanced sili-
con-gate CMOS technology to compare bit for bit two 8-bit
words and indicates whether or not they are equal. The
P
=
Q output indicates equality when it is LOW. A single
active low enable is provided to facilitate cascading of sev-
eral packages and enable comparison of words greater
than 8 bits.
This device is useful in memory block decoding applica-
tions, where memory block enable signals must be gener-
ated from computer address information.
The comparator’s output can drive 10 low power Schottky
equivalent loads. This comparator is functionally and pin
compatible to the 74LS688. All inputs are protected from
damage due to static discharge by diodes to V
CC
and
ground.
Features
I
Typical propagation delay: 20 ns
I
Wide power supply range: 2–6V
I
Low quiescent current: 80
μ
A (74 Series)
I
Large output current: 4 mA (74 Series)
I
Same as HC521
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignments for DIP
Top View
Truth Table
Logic Diagram
Order Number
MM74HC688WM
MM74HC688SJ
MM74HC688MTC
MM74HC688N
Package Number
M20B
M20D
MTC20
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Inputs
Data
Enable
P,Q
G
P
=
Q
P
=
Q
L
L
P
>
Q
L
H
P
<
Q
L
H
X
H
H
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MM74HC688MTC_Q | 功能描述:校驗器 IC 8-Bit Mag Comparator RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MM74HC688MTCX | 功能描述:校驗器 IC 8-Bit Mag Comparator RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MM74HC688N | 功能描述:校驗器 IC 8-Bit Mag Comparator RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
| MM74HC688N | 制造商:Fairchild Semiconductor Corporation 功能描述:IC 74HC CMOS 74HC688 DIP20 6V |
| MM74HC688N_Q | 功能描述:校驗器 IC 8-Bit Mag Comparator RoHS:否 制造商:STMicroelectronics 產品: 比較器類型: 通道數量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應時間: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel |
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