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參數資料
| 型號： | MC74HCT245AFR1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 總線收發器 |
| 英文描述： | HCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | EIAJ, SOIC-20 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 219K |
| 代理商： | MC74HCT245AFR1 |
Semiconductor Components Industries, LLC, 2000
March, 2000 – Rev. 8
1
Publication Order Number:
MC74HCT245A/D
MC74HCT245A
Octal 3-State Noninverting
BusTransceiver with LSTTL
Compatible Inputs
High–Performance Silicon–Gate CMOS
The MC74HCT245A is identical in pinout to the LS245. This
device may be used as a level converter for interfacing TTL or NMOS
outputs to High Speed CMOS inputs.
The MC74HCT245A is a 3–state noninverting transceiver that is
used for 2–way asynchronous communication between data buses.
The device has an active–low Output Enable pin, which is used to
place the I/O ports into high–impedance states. The Direction control
determines whether data flows from A to B or from B to A.
Output Drive Capability: 15 LSTTL Loads
TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0 A
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 304 FETs or 76 Equivalent Gates
LOGIC DIAGRAM
A
DATA
PORT
A8
A7
A6
A5
A3
A4
A2
A1
9
8
7
6
5
4
3
2
DIRECTION
OUTPUT ENABLE
1
19
PIN 20 = VCC
PIN 10 = GND
18
17
16
15
14
13
12
11
B1
B2
B3
B4
B5
B6
B7
B8
B
DATA
PORT
Design Criteria
Value
Units
Internal Gate Count*
76
ea
Internal Gate Propagation Delay
1.0
ns
Internal Gate Power Dissipation
5.0
W
Speed Power Product
0.005
pJ
*Equivalent to a two–input NAND gate.
FUNCTION TABLE
Control Inputs
Output
Enable
Direction
Operation
L
Data Transmitted from Bus B to Bus A
L
H
Data Transmitted from Bus A to Bus B
H
X
Buses Isolated (High–Impedance State)
X = Don’t Care
http://onsemi.com
MARKING
DIAGRAMS
1
20
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
SOIC WIDE–20
DW SUFFIX
CASE 751D
HCT245A
AWLYYWW
PDIP–20
N SUFFIX
CASE 738
1
20
MC74HCT245AN
AWLYYWW
TSSOP–20
DT SUFFIX
CASE 948G
1
20
1
20
1
20
Device
Package
Shipping
ORDERING INFORMATION
MC74HCT245AN
PDIP–20
1440 / Box
MC74HCT245ADW
SOIC–WIDE
38 / Rail
MC74HCT245ADWR2
SOIC–WIDE
1000 / Reel
MC74HCT245ADT
TSSOP–20
75 / Rail
MC74HCT245ADTR2
TSSOP–20
2500 / Reel
HCT
245A
ALYW
1
20
PIN ASSIGNMENT
A5
A3
A2
A1
DIRECTION
GND
A8
A7
A6
A4
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
11
12
13
B3
B2
B1
OUTPUT ENABLE
VCC
B8
B7
B6
B5
B4
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC74HCT245AH | 制造商:ON Semiconductor 功能描述: |
| MC74HCT245AN | 功能描述:總線收發器 5V Octal 3-State RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| MC74HCT245AND | 制造商:ONS 功能描述:ON SEMICONDUCTOR S1I2G, S1I2F |
| MC74HCT245ANG | 功能描述:總線收發器 5V Octal 3-State Non-Inverting Bus RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| MC74HCT245ANG | 制造商:ON Semiconductor 功能描述:Package/Case:14-PDIP |
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