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參數(shù)資料
| 型號： | 74LVC244AMTR |
| 廠商： | 意法半導體 |
| 英文描述： | LOW VOLTAGE CMOS QUAD BUS BUFFERS (3-STATE) HIGH PERFORMANCE |
| 中文描述： | 低電壓CMOS四總線緩沖器（三態(tài)）高性能 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 96K |
| 代理商： | 74LVC244AMTR |
Philips Semiconductors
Product specification
74LVC244A
74LVCH244A
Octal buffer/line driver with 5-volt
tolerant inputs/outputs (3-State)
2
1998 May 20
853-1876 19419
FEATURES
5-volt tolerant inputs/outputs, for interfacing with 5-volt logic
Supply voltage range of 2.7V to 3.6V
Complies with JEDEC standard no. 8-1A
CMOS low power consumption
Direct interface with TTL levels
High impedance when V
CC
= 0V
Bushold on all data inputs (74LVCH244A only)
DESCRIPTION
The 74LVC244A/74LVCH244A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most advanced
CMOS compatible TTL families.
Inputs can be driven from either 3.3V or 5V devices. In 3-State
operation, outputs can handle 5V. These features allow the use of
these devices as translators in a mixed 3.3V/5V environment.
The 74LVC244A/74LVCH244A is an octal non-inverting buffer/line
driver 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. Schmitt-trigger
action at all inputs makes the circuit highly tolerant for slower input
rise and fall times.
The ’244’ is functionally identical to the ’240’, but the ’240’ has
non-inverting outputs.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
t
PHL
PLH
/t
Propagation delay
1A to 1Y
n;
2A
n
to 2Y
n
C
L
= 50pF
= 3 3V
V
CC
= 3.3V
3 5
3.5
ns
C
I
Input capacitance
4.4
pF
C
PD
Power dissipation capacitance per
buffer
Notes 1 and 2
22.6
pF
NOTE:
1. C
PD
is used to determine the dynamic power dissipation (P
D
in W):
P
D
= C
PD
x V
CC2
x f
i
+ (C
L
x V
CC2
x f
o
) where:
f
i
= input frequency in MHz; C
L
= output load capacity in pF;
f
o
= output frequency in MHz; V
CC
= supply voltage in V;
(C
L
x V
CC2
x f
o
) = sum of outputs.
2. The condition is V
I
= GND to V
CC
ORDERING INFORMATION
PACKAGES
TEMPERATURE
RANGE
OUTSIDE
NORTH AMERICA
NORTH AMERICA
PKG. DWG. #
20-Pin Plastic Shrink Small Outline (SO)
–40
°
C to +85
°
C
74LVC244A D
74LVC244A D
SOT163-1
20-Pin Plastic Shrink Small Outline (SSOP) Type II
–40
°
C to +85
°
C
74LVC244A DB
74LVC244A DB
SOT339-1
20-Pin Plastic Thin Shrink Small Outline (TSSOP) Type I
–40
°
C to +85
°
C
74LVC244A PW
7LVC244APW DH
SOT360-1
20-Pin Plastic Shrink Small Outline (SO)
–40
°
C to +85
°
C
74LVCH244A D
74LVCH244A D
SOT163-1
20-Pin Plastic Shrink Small Outline (SSOP) Type II
–40
°
C to +85
°
C
74LVCH244A DB
74LVCH244A DB
SOT339-1
20-Pin Plastic Thin Shrink Small Outline (TSSOP) Type I
–40
°
C to +85
°
C
74LVCH244A PW
LVCH244APW DH
SOT360-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74LVC244 | OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS |
| 74LVCH245A | Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs (3-State)(具有定向引腳的5V輸入/輸出容限的八位總線收發(fā)器（三態(tài)）) |
| 74LVC245 | Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs 3-State |
| 74LVC245A | Octal bus transceiver with direction pin with 5-volt tolerant inputs/outputs 3-State |
| 74LVC245A | LOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER (NOT INVERTED) HIGH PERFORMANCE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74LVC244A-PG | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 74LVC244APGG | 制造商:Integrated Device Technology Inc 功能描述:OCTAL BUFFER/LINE DRIVER W/3-STATE OUTPUTS 制造商:Integrated Device Technology Inc 功能描述:Buffer/Line Driver 8-CH Non-Inverting 3-ST CMOS 20-Pin TSSOP Tube 制造商:IDT from Components Direct 功能描述:74LVC244APGG, OCTAL BUFFER/DRIVER NON-INVERTING 3-ST CMOS - Rail/Tube 制造商:IDT 功能描述:IDT 74LVC244APGG, Octal Buffer/Driver Non-Inverting 3-ST CMOS 20-Pin TSSOP Tube |
| 74LVC244APGG8 | 制造商:Integrated Device Technology Inc 功能描述:Buffer/Line Driver 8-CH Non-Inverting 3-ST CMOS 20-Pin TSSOP T/R 制造商:Integrated Device Technology Inc 功能描述:IC BUFF/DVR TRI-ST DUAL 20TSSOP |
| 74LVC244APW | 功能描述:緩沖器和線路驅(qū)動器 3.3V OCTAL 3-S DRVER 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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| 74LVC244APW,112 | 功能描述:緩沖器和線路驅(qū)動器 3.3V OCTAL 3-S DRVER 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 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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