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MC74VHCT259A: 8-Bit Addressable Latch/1-of-8 Decoder CMOS Logic Level Shifter

Datasheet: 8-Bit Addressable Latch/1-of-8 Decoder CMOS Logic Level Shifter
Rev. 6 (105kB)
Product Overview
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The MC74VHCT259 is an 8-bit Addressable Latch fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.

The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output.

The VHC259 is designed for general purpose storage applications in digital systems. The device has four modes of operation as shown in the mode selection table. In the addressable latch mode, the signal on Data In is written into the addressed latch. The addressed latch followsthe data input with all non-addressed latches remaining in their previous states. In the memory mode, all latches remain in their previous state and are unaffected by the Data or Address inputs. In the one-of-eight decoding or demultiplexing mode, the addressed output follows the state of Data In with all other outputs in the LOW state. In the Reset mode, all outputs are LOW and unaffected by the address and data inputs. When operating the VHCT259 as an addressable latch, changing more than one bit of the address could impose a transient wrong address. Therefore, this should only be done while in the memory mode.

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

The VHCT259A input structures provide protection when voltages between 0 V and 5.5 V are applied, regardless of the supply voltage.The output structures also provide protection when VCC = 0 V. Theseinput and output structures help prevent device destruction caused by supply voltage-input/output voltage mismatch, battery backup, hot insertion, etc.
Features
 
  • High Speed: tPD = 7.6 ns (Typ) at VCC = 5 V
  • Low Power Dissipation: ICC = 2 mA (Max) at TA = 25°C
  • High Noise Immunity: VNIH = VNIL = 28% VCC
  • CMOS-Compatible Outputs: VOH > 0.8 VCC ; VOL < 0.1 VCC @Load
  • Power Down Protection Provided on Inputs and Outputs
  • Balanced Propagation Delays
  • Pin and Function Compatible with Other Standard Logic Families
  • Latchup Performance Exceeds 300 mA
  • ESD Performance: HBM > 2000 V
  • Pb-Free Packages are Available*
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (2)
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
MC74VHCT259ADG Active
Pb-free
Halide free
MC74VHCT259A SOIC-16 751B-05 1 260 Tube 48 $0.2617
MC74VHCT259ADR2G Active
Pb-free
Halide free
MC74VHCT259A SOIC-16 751B-05 1 260 Tape and Reel 2500 $0.2617
MC74VHCT259ADTG Active
Pb-free
Halide free
MC74VHCT259A TSSOP-16 948F-01 1 260 Tube 96 $0.1867
MC74VHCT259ADTRG Active
Pb-free
Halide free
MC74VHCT259A TSSOP-16 948F-01 1 260 Tape and Reel 2500 $0.1867
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 62,688
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Type
Channels
VCC Min (V)
VCC Max (V)
tpd Max (ns)
IO Max (mA)
Package Type
MC74VHCT259ADG  
 $0.2617 
Pb
H
 Active   
Latch
1
4.5
5.5
10
8
SOIC-16
MC74VHCT259ADR2G  
 $0.2617 
Pb
H
 Active   
Latch
1
4.5
5.5
10
8
SOIC-16
MC74VHCT259ADTG  
 $0.1867 
Pb
H
 Active   
Latch
1
4.5
5.5
10
8
TSSOP-16
MC74VHCT259ADTRG  
 $0.1867 
Pb
H
 Active   
Latch
1
4.5
5.5
10
8
TSSOP-16
Case Outlines
751B-05    948F-01   
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