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| 型号： | IDT74LVCH2240APY |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 总线收发器 |
| 英文描述： | LVC/LCX/Z SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDSO20 |
| 封装： | 0.65 MM PITCH, SSOP-20 |
| 文件页数： | 1/6页 |
| 文件大小： | 113K |
| 代理商： | IDT74LVCH2240APY |
1
EXTENDEDCOMMERCIALTEMPERATURERANGE
IDT74LVCH2240A
3.3V CMOS OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
JUNE 1999
1999
Integrated Device Technology, Inc.
DSC-5160/-
c
IDT74LVCH2240A
ADVANCE
INFORMATION
EXTENDED COMMERCIAL TEMPERATURE RANGE
DESCRIPTION:
The LVCH2240A device is designed specifically to improve the perfor-
mance and density of 3-state memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.
This device is organized as two 4-bit buffers/drivers with separate
output-enable (
OE ) inputs. When OE is low, the device passes data from
the A inputs to the Y outputs. When
OE is high, the outputs are in the high-
impedance state.
The LVCH2240A has series resistors in the device output structure
which will significantly reduce line noise when used with light loads. This
driver has been developed to drive ±12mA at the designated thresholds.
To ensure the high-impedance state during power up or power down,
OE should be tied to VCC through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking capability of the driver.
Inputs can be driven from either 3.3V or 5V devices. This feature allows
the use of this device as a translator in a mixed 3.3V/5V system environ-
ment.
The LVCH2240A has “bus-hold” which retains the inputs’ last state
whenever the input goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
FEATURES:
–
0.5 MICRON CMOS Technology
–
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
–
1.27mm pitch SOIC, 0.65mm pitch SSOP,
0.635mm pitch QSOP, 0.65mm pitch TSSOP packages
–
Extended commercial range of – 40°C to +85°C
–VCC = 3.3V ±0.3V, Normal Range
–VCC = 2.3V to 3.6V, Extended Range
–
CMOS power levels (0.4 W typ. static)
–
Rail-to-Rail output swing for increased noise margin
–
All inputs, outputs and I/O are 5 Volt tolerant
–
Supports hot insertion
3.3V CMOS OCTAL
BUFFER/DRIVER WITH 3-
STATE OUTPUTS, 5 VOLT
TOLERANT I/O, BUS-HOLD
Functional Block Diagram
1
A1
1
A2
1
A3
1
A4
1
Y1
1
Y2
1
Y3
1
Y4
2
A1
2
A2
2
A3
2
A4
2
Y1
2
OE
2
Y2
2
Y3
2
Y4
1
2
4
6
8
19
11
18
16
14
12
9
15
5
7
13
3
17
1
OE
Drive Features for LVCH2240A:
–
Balanced Output Drivers:
±12mA
–
Reduced system switching noise
APPLICATIONS:
5V and 3.3V mixed voltage systems
Data communication and telecommunication systems
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