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參數(shù)資料
| 型號： | CD74HCT242 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | High Speed CMOS Logic Quad-Bus Transceiver with Three-State Outputs |
| 中文描述： | 高速CMOS邏輯四總線收發(fā)器與三態(tài)輸出 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 48K |
| 代理商： | CD74HCT242 |
1
Data sheet acquired from Harris Semiconductor
SCHS168
CD74HCT242 was not acquired from Harris Semiconductor.
Features
Typical Propagation Delay (A to B, B to A) of 7ns at
V
CC
= 5V, C
L
= 15pF, T
A
= 25
o
C
Three-State Outputs
Buffered Inputs
Fanout (Over Temperature Range)
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
Wide Operating Temperature Range . . . -55
o
C to 125
o
C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL
Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30% of V
CC
at V
CC
= 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
≤
1
μ
A at V
OL
, V
OH
Pinout
CD74HCT242, CD74HC243, CD74HCT243
(PDIP, SOIC)
TOP VIEW
Description
The Harris CD74HCT242, CD74HC243 and CD74HCT243
silicon-gate CMOS three-state bidirectional inverting and
non-inverting buffers are intended for two-way asynchronous
communication between data buses. They have high drive
current outputs which enable high-speed operation when
driving large bus capacitances. These circuits possess the
low power dissipation of CMOS circuits, and have speeds
comparable to low power Schottky TTL circuits. They can
drive 15 LSTTL loads.
The CD74HCT242 is an inverting buffer; the CD74HC243
and CD74HCT243 are non-inverting buffers.
The states of the output enables (OEB, OEA) determine
both the direction of flow (A to B, B to A), and the three-state
mode.
OEB
NC
A0
A1
A2
A3
GND
V
CC
OEA
NC
B0
B1
B2
B3
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Ordering Information
PART NUMBER
TEMP. RANGE
(
o
C)
PACKAGE
PKG.
NO.
CD74HC243E
-55 to 125
14 Ld PDIP
E14.3
CD74HC243M
-55 to 125
14 Ld SOIC
M14.15
CD74HCT243M
-55 to 125
14 Ld SOIC
M14.15
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Waferordieforthispartnumberisavailablewhichmeetsallelec-
trical specifications. Please contact your local sales
November 1997
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
Harris Corporation 1997
CD74HCT242, CD74HC243,
CD74HCT243
High Speed CMOS Logic
Quad-Bus Transceiver with Three-State Outputs
File Number
1488.1
[ /Title
(CD74
HCT24
2,
CD74
HC243
,
CD74
HCT24
3)
/Sub-
ject
(High
Speed
CMOS
Logic
Quad-
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CD74HCT242E | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
| CD74HCT243E | 功能描述:總線收發(fā)器 Tri-State High Speed RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)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 |
| CD74HCT243EE4 | 功能描述:總線收發(fā)器 Hi-Sp CMOS Quad Bus Trncvr W/3St Otp RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)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 |
| CD74HCT243EG4 | 功能描述:IC BUS TRANSCVR TRI-ST 4B 14DIP 制造商:texas instruments 系列:74HCT 包裝:管件 零件狀態(tài):在售 邏輯類型:收發(fā)器，非反相 元件數(shù):1 每元件位數(shù):4 輸入類型:- 輸出類型:推挽式 電流 - 輸出高，低:6mA，6mA 電壓 - 電源:4.5 V ~ 5.5 V 工作溫度:-55°C ~ 125°C（TA） 安裝類型:通孔 封裝/外殼:14-DIP（0.300"，7.62mm） 供應(yīng)商器件封裝:14-PDIP 基本零件編號:74HCT243 標(biāo)準(zhǔn)包裝:25 |
| CD74HCT243M | 功能描述:總線收發(fā)器 Hi-Sp CMOS Quad Bus Trncvr W/3St Otp RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)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 |
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