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74LVCH322244A

Features: · 5 V tolerant inputs/outputs for interfacing with 5 V logic· Wide supply voltage range of 1.2 to 3.6 V· CMOS low power consumption· MULTIBYTEä flow-trough standard pin-out architecture· Low inductance multiple power and ground pins for minimum noise and ground bounce· Direct interf...

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SeekIC No. : 004251418 Detail

74LVCH322244A: Features: · 5 V tolerant inputs/outputs for interfacing with 5 V logic· Wide supply voltage range of 1.2 to 3.6 V· CMOS low power consumption· MULTIBYTEä flow-trough standard pin-out architectu...

74LVCH322244A Data Sheet

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Part Number:
74LVCH322244A
Supply Ability:
5000

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Product Details

Description



Features:

· 5 V tolerant inputs/outputs for interfacing with 5 V logic
· Wide supply voltage range of 1.2 to 3.6 V
· CMOS low power consumption
· MULTIBYTEä flow-trough standard pin-out architecture
· Low inductance multiple power and ground pins for minimum noise and ground bounce
· Direct interface with TTL levels
· Bus hold on data inputs (74LVCH322244A only)
· Integrated 30 W termination resistors
· Typical output ground bounce voltage:
  VOLP <0.8 V at VCC = 3.3 V; Tamb = 25 °C
· Typical output VOH undershoot voltage:
  VOHV >2 V at VCC = 3.3 V; Tamb = 25 °C
· Power-off disabled outputs, permitting live insertion
· Plastic fine-pitch ball grid array package.


Specifications

Symbol
Parameter
CONDITIONS
Min
Max
Unit
VCC
DC Supply Voltage
-0.5
+6.5
V
VI
DC input voltage
note 1
-0.5
+6.5
V
IIK
DC input diode current
VI < 0
-50
mA
IOK
DC output diode current
VO > VCC or VO < 0; note 1
±50
mA
VO
output voltage
output HIGH or LOW state; note 1
-0.5
VCC + 0.5
V
output 3-state; note 1
-0.5
+6.5
V
IO
DC output source or sink current
VO = 0 to VCC
±50
mA
ICC or IGND
DC VCC or GND current
±100
mA
Tstg
Storage temperature
-65
+150
Ptot
power dissipation
temperature range -40 to +85 °C;
note 2
300
mW
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. Above 70 °C the value of PD derates linearly with 1.8 mW/K.


Description

The 74LVCH322244A 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 3.3 or 5 V devices. In 3-state operation, outputs can handle 5 V. These features allow the use of these devices in a mixed 3.3 and 5 V environment.

The 74LVCH322244A is a 32-bit 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 input nOE causes the outputs to assume a high-impedance OFF-state.

The 74LVCH322244A is designed with 30 W series termination resistors in both HIGH and LOW output stages to reduce line noise.

To ensure the high-impedance state during power-up or power-down, input nOE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is
determined by the current-sinking capability of the driver.

The 74LVCH322244A bus hold data input circuit eliminates the need for external pull-up resistors to hold unused or floating data inputs at a valid logic level (see Fig.3).




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