SN74AHC373 Octal Transparent D-Type Latches With 3-State Outputs | TI.com

SN74AHC373 (ACTIVE) Octal Transparent D-Type Latches With 3-State Outputs

Octal Transparent D-Type Latches With 3-State Outputs - SN74AHC373
Datasheet
 

Description

The ’AHC373 devices are octal transparent D-type latches designed for 2-V to 5.5-V VCC operation.

When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs are latched at the logic levels of the D inputs.

A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.

OE\ does not affect the internal operations of the latches. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, 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.

Features

  • Operating Range 2-V to 5.5-V VCC
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • 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) 3-state output Rating Operating temperature range (C)
SN74AHC373 Order now AHC     2     5.5     8     3.3
5    
110     0.04     15
10.5    
50     -50     Yes     Catalog     -40 to 85    
SN54AHC373 Samples not available AHC     2     5.5     8     3.3
5    
110     0.04     17
10.5    
50     -50     Yes     Military     -55 to 125