MC74VHCT245A: Octal Bus Transceiver

Datasheet: Octal Bus Transceiver
Rev. 7 (94kB)
Product Overview
View Reliability Data
View Material Composition
Product Change Notification
The MC74VHCT245A is an advanced high speed CMOS octal bus transceiver fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.

It is intended for two-way asynchronous communication between data buses. The direction of data transmission is determined by the level of the DIR input. The output enable pin (OE) can be used to disable the device, so that the buses are effectively isolated.

All inputs are equipped with protection circuits against static discharge.

The VHCT inputs are compatible with TTL levels. This device can be used as a level converter for interfacing 3.3V to 5.0V, because it has full 5V CMOS level output swings.

The VHCT245A input and output (when disabled) structures provide protection when voltages between 0V and 5.5V are applied, regardless of the supply voltage. These input and output structures help prevent device destruction caused by supply voltage - input/output voltage mismatch, battery backup, hot insertion, etc.
Features
 
  • High Speed: tPD = 4.9ns (Typ) at VCC = 5V
  • Low Power Dissipation: ICC = 4µA (Max) at TA = 25 C
  • High Noise Immunity: VNIH = VNIL = 28% VCC
  • Power Down Protection Provided on Inputs and Outputs
  • Balanced Propagation Delays
  • Designed for 2V to 5.5V Operating Range
  • Low Noise: VOLP = 1.2V (Max)
  • Pin and Function Compatible with Other Standard Logic Families
  • Latchup Performance Exceeds 300mA
  • ESD Performance: HBM > 2000V; Machine Model > 200V
  • Chip Complexity: 304 FETs or 76 Equivalent Gates

    Application Notes
  • Do not force a signal on an I/O pin when it is an active output,
    damage may occur.
  • All floating (high impedance) input or I/O pins must be fixed by
    means of pull up or pull down resistors or bus terminator ICs.
  • A parasitic diode is formed between the bus and VCC terminals.
    Therefore, the VHC245 cannot be used to interface 5V to 3V systems
    directly.
  • Pb-Free Packages are Available*
Technical Documentation & Design Resources
Simulation Models (1) Package Drawings (2)
Data Sheets (1)  
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
MC74VHCT245ADTG Active
Pb-free
Halide free
MC74VHCT245A TSSOP-20 9.48 1 260 Tube 75 $0.3013
MC74VHCT245ADTRG Active
Pb-free
Halide free
MC74VHCT245A TSSOP-20 9.48 1 260 Tape and Reel 2500 $0.29
MC74VHCT245ADWG Active
Pb-free
Halide free
MC74VHCT245A SOIC-20W 751D-05 3 260 Tube 38 $0.3887
MC74VHCT245ADWRG Active
Pb-free
Halide free
MC74VHCT245A SOIC-20W 751D-05 3 260 Tape and Reel 1000 $0.3857
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 14,775
Market Leadtime (weeks) : Contact Factory
PandS   (2020-09-14 00:00) : >1K
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 5,206
Market Leadtime (weeks) : Contact Factory
FutureElectronics   (2020-08-19 00:00) : >1K

Product
Description
Pricing ($/Unit)
Compliance
Status
Channels
Output
VCC Min (V)
VCC Max (V)
tpd Max (ns)
IO Max (mA)
Package Type
MC74VHCT245ADTG  
 $0.3013 
Pb
H
 Active   
8
3-State
4.5
5.5
8.7
8
TSSOP-20
MC74VHCT245ADTRG  
 $0.29 
Pb
H
 Active   
8
3-State
4.5
5.5
8.7
8
TSSOP-20
MC74VHCT245ADWG  
 $0.3887 
Pb
H
 Active   
8
3-State
4.5
5.5
8.7
8
SOIC-20W
MC74VHCT245ADWRG  
 $0.3857 
Pb
H
 Active   
8
3-State
4.5
5.5
8.7
8
SOIC-20W
Case Outlines
751D-05    9.48   
Previously Viewed Products
Clear List

Your request has been submitted for approval.
Please allow 2-5 business days for a response.
You will receive an email when your request is approved.
Request for this document already exists and is waiting for approval.