The 74173 IC 4-Bit D-Type Register with 3-State Outputs, designated as SN74LS173N and manufactured by XBLW, is a high-performance monolithic integrated circuit comprising four D-type flip-flops with totem-pole 3-state outputs, optimized for direct interfacing with system buses in digital logic applications. This device supports two operational modes���parallel load and hold���controlled by gated enable inputs (G1 and G2), allowing data entry at the D inputs to be latched on the positive clock transition when both enables are low, or maintaining the current state when high.

Features:

• 3-State Outputs Interface Directly With System Bus
• Gated Output-Control LInes for Enabling or Disabling the Outputs
• Fully Independent Clock Virtually Eliminates Restrictions for Operating in One of Two Modes: ��� Parallel Load ��� Do Nothing (Hold)
• For applications such as Bus Buffer Registe"wp-block-heading">Specifications:

  Parameter	Value
  Category	Integrated Circuits (ICs)/Logic/Flip Flops
  Manufacturer	XBLW
  Package	PDIP-16
  Voltage ��� Supply	4.75V~5.25V
  Clock Frequency	50MHz
  Propagation Delay	30ns@5V,45pF
  Operating Temperature	0���~+70���
  Current ��� Output High(IOH)	2.6mA
  Function	Reset
  Series	74LS Series
  Type	D-Type
  Current ��� Output Low(IOL)	24mA
  Number of Bits per Element	4
  Number of Elements	1
  Setup Time	17ns
  Hold Time	3ns
  Quiescent Curren>	Output Type	Tri-State
  Trigger Type	Rising Edge

  Pin Configuration:

  

  Pin No	Pin Name	Description
  1	M	Active Low Output Enable Input 1
  2	N	Active Low Output Enable Input 2
  3	1Q	Output Pin 1Q
  4	2Q	Output Pin 2Q
  5	3Q	Output Pin 3Q
  6	4Q	Output Pin 4Q
  7	Clock	Clock Pulse Input
  8	GND	Ground Pin
  9	G1	Active low Input Enable Pin 1
  10	G2	Active low Input Enable Pin 2
  11	4D	Data Input 4D
  12	3D	Data Input 3D
  13	2D	Data Input 2D
  14	1D	Data Input 1D
  15	Clear	Master Reset Input
  16	VCC	Chip Supply Voltage

  Footprint:

  
  Applications:

  • Bus Buffer Registers
  • Cascading applications
  • High logic level controller