SN74LV393A Dual 4-Bit Binary Counters | TI.com

SN74LV393A
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Dual 4-Bit Binary Counters

Dual 4-Bit Binary Counters - SN74LV393A
Datasheet
 

Description

The ’LV393A devices contain eight flip-flops and additional gating to implement two individual 4-bit counters in a single package. These devices are designed for 2-V to 5.5-V VCC operation.

These devices comprise two independent 4-bit binary counters, each having a clear (CLR) and a clock (CLK)\ input. These devices change state on the negative-going transition of the CLK\ pulse. N-bit binary counters can be implemented with each package, providing the capability of divide by 256. The ’LV393A devices have parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system timing signals.

These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.

Features

  • 2-V to 5.5-V VCC Operation
  • Max tpd of 10 ns at 5 V
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
       >2.3 V at VCC = 3.3 V, TA = 25°C
  • Ioff Supports Partial-Power-Down-Mode Operation
  • Dual 4-Bit Binary Counters With Individual Clocks
  • Direct Clear for Each 4-Bit Counter
  • Can Significantly Improve System Densities by Reducing Counter Package Count by 50 Percent
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Function Type Rating Operating temperature range (C) Package Group
SN74LV393A Order now LV-A     2     5.5     4     2.5
3.3
5    
65
105    
0.02     16.5     12     -12     Counter     Binary     Catalog     -40 to 85     SOIC | 14
SO | 14
SSOP | 14
TSSOP | 14
TVSOP | 14    
SN74LV393A-EP Samples not available LV-A     2     5.5     4     2.5
3.3
5    
70     0.02     16.5     12     -12     Counter     Binary     HiRel Enhanced Product     -40 to 105     TSSOP | 14    
SN74LV393A-Q1 Samples not available LV-A     2     5.5     4     2.5
3.3
5    
35
75    
0.02     16.5     12     -12     Counter     Binary     Automotive     -40 to 105     TSSOP | 14