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參數(shù)資料
| 型號(hào)： | 74HCT240 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路緩沖器和線路驅(qū)動(dòng)器，三態(tài)輸出 |
| 文件頁(yè)數(shù)： | 2/7頁(yè) |
| 文件大?。?/td> | 44K |
| 代理商： | 74HCT240 |
December 1990
2
Philips Semiconductors
Product specification
Octal buffer/line driver; 3-state;
inverting
74HC/HCT240
FEATURES
Output capability: bus driver
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT240 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT240 are octal inverting buffer/line drivers
with 3-state outputs. The 3-state outputs are controlled by
the output enable inputs 1OE and 2OE. A HIGH on nOE
causes the outputs to assume a high impedance
OFF-state. The “240” is identical to the “244” but has
inverting outputs.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
= 6 ns
Notes
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W):
P
D
= C
PD
×
V
CC2
×
f
i
+ ∑
(C
L
×
V
CC2
×
f
o
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
1.5 V
2.
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”
.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
t
PHL/
t
PLH
propagation delay
1A
n
to 1Y
n
;
2A
n
to 2Y
n
input capacitance
power dissipation capacitance per buffer
C
L
= 15 pF; V
CC
= 5 V
9
9
ns
C
I
C
PD
3.5
30
3.5
30
pF
pF
notes 1 and 2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HC241 | Octal buffer/line driver; 3-state |
| 74HCT241 | Octal buffer/line driver; 3-state |
| 74HC242 | Quad bus transceiver; 3-state; inverting |
| 74HCT242 | 4-Bit Synchronous Binary Counters 16-SOIC -40 to 85 |
| 74HC243 | Quad bus transceiver; 3-state |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HCT240BQ | 制造商:NXP Semiconductors 功能描述:IC OCTAL BUFF/DRV 3 ST DHV |
| 74HCT240BQ,115 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 OCTAL 3-S BUF INV RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74HCT240BQ-G | 功能描述:緩沖器和線路驅(qū)動(dòng)器 OCTAL 3-S BUF INV RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74HCT240BQ-Q100,11 | 功能描述:Buffer, Inverting 2 Element 4 Bit per Element Push-Pull Output 20-DHVQFN (4.5x 2.5) 制造商:nxp semiconductors 系列:汽車級(jí)，AEC-Q100，74HCT 包裝:帶卷（TR） 零件狀態(tài):有效 邏輯類型:緩沖器，反向 元件數(shù):2 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:-40°C ~ 125°C（TA） 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商器件封裝:20-DHVQFN（4.5x 2.5） 標(biāo)準(zhǔn)包裝:3,000 |
| 74HCT240D | 功能描述:緩沖器和線路驅(qū)動(dòng)器 OCTAL 3-S BUF INV RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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