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SN74LVTH2245

Features:  State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power Dissipation B-Port Outputs Have Equivalent 22-W Series Resistors, So No External Resistors Are Required Ioff and Power-Up 3-State Support Hot Insertion Bus Hold on Data Inputs Eliminate...

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SeekIC No. : 004499487 Detail

SN74LVTH2245: Features:  State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power Dissipation B-Port Outputs Have Equivalent 22-W Series Resistors, So No External Resist...

SN74LVTH2245 Data Sheet

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Part Number:
SN74LVTH2245
Supply Ability:
5000

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  • 1~5000
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  • 15 Days
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Product Details

Description



Features:

 State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power Dissipation
 B-Port Outputs Have Equivalent 22-W Series Resistors, So No External Resistors Are Required
 Ioff and Power-Up 3-State Support Hot Insertion
 Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
 Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
 Support Unregulated Battery Operation Down to 2.7 V
 Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C
 Latch-Up Performance Exceeds 500 mA Per JESD 17
 ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
 Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), Ceramic Flat (W) Packages, and Ceramic (J) DIPs


Pinout

Connection Diagram


Specifications

Supply voltage range, VCC  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .0.5 V to 4.6 V
Input voltage range, VI (see Note 1)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to 7 V
Voltage range applied to any output in the high-impedance
or power-off state, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Voltage range applied to any output in the high state, VO (see Note 1) . . . . . . . . . . .  0.5 V to VCC + 0.5 V
Current into any output in the low state, IO: SN54LVTH2245 (A port) . . . . . . . . . . . . . . . . . . . .. . . . . . .96 mA 
                                                                       SN74LVTH2245 (A port)  . . . . . . . . . . . . . . . . . . . . . . . . .128 mA
                                                                        B port  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 mA
Current into any output in the high state, IO (see Note 2): SN54LVTH2245 (A port)  . . . . . . . . . . . . . . .48 mA
                                                                                             SN74LVTH2245 (A port)  . . . . . . . . . . . . . . .64 mA
                                                                                             B port . . . . . . . . . . . . . . . . . . . . . . . . . . . .  .30 mA
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 mA
Output clamp current, IOK (VO < 0)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .50 mA
Package thermal impedance, JA (see Note 3): DB package  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115°C/W
                                                                          DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97°C/W 
                                                                          PW package  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128°C/W
Storage temperature range, Tstg  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C 
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
             2. This current flows only when the output is in the high state and VO > VCC.
             3. The package thermal impedance is calculated in accordance with JESD 51.


Description

These octal bus transceivers SN74LVTH2245 are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.

These devices SN74LVTH2245 are designed for asynchronous communication between data buses. They transmit data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the devices so the buses are effectively isolated.

Active bus-hold circuitry is provided by SN74LVTH2245 to hold unused or floating data inputs at a valid logic level.

The SN74LVTH2245 B-port outputs, which are designed to source or sink up to 12 mA, include equivalent 22- series resistors to reduce overshoot and undershoot.

When VCC is between 0 and 1.5 V, the devices SN74LVTH2245 are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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.

These devices SN74LVTH2245 are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

The SN54LVTH2245 is characterized for operation over the full military temperature range of 55°C to 125°C.

The SN74LVTH2245 is characterized for operation from 40°C to 85°C.




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