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HEF40373BT

Octal transparent latch with 3-state outputs

The HEF40373B is an 8-bit transparent latch with 3-state buffered outputs. The output stages have high current output capability suitable for driving highly capacitive loads. The latch outputs follow the data inputs when the latch enable (E) is HIGH. When E is LOW, the data that meets the set-up times is latched. The 3-state outputs are controlled by the output enable input EO. A HIGH on EO causes the outputs to assume a high impedance OFF-state. The device features hysteresis on the E input to improve noise rejection. Schmitt-trigger action in the E input makes the circuit highly tolerant to slower input rise and fall times.

This product has been discontinued, click here for discontinuation information and replacement parts.

Features and benefits

  • Octal bus interface

  • 3-state buffers

  • Fully static operation

  • 5 V, 10 V, and 15 V parametric ratings

  • Standardized symmetrical output characteristics

  • Specified from −40 °C to +85 °C

Parametrics

Type number Product status VCC (V) Logic switching levels Output drive capability (mA) tpd (ns) Nr of bits Power dissipation considerations Tamb (°C) Rth(j-a) (K/W) Ψth(j-top) (K/W) Rth(j-c) (K/W) Package name
HEF40373BT End of life 4.5 - 15 CMOS -50/+62 40 8 medium -40~85 76 18.7 52 SO20

PCB Symbol, Footprint and 3D Model

Model Name Description

Package

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
HEF40373BT HEF40373BT,652
(933638700652)
Obsolete no package information
HEF40373BT,653
(933638700653)
Obsolete

Environmental information

All type numbers in the table below are discontinued. See the table Discontinuation information for more information.

Type number Orderable part number Chemical content RoHS RHF-indicator
HEF40373BT HEF40373BT,652 HEF40373BT rohs rhf rhf
HEF40373BT HEF40373BT,653 HEF40373BT rohs rhf rhf
Quality and reliability disclaimer

Documentation (3)

File name Title Type Date
HEF40373B Octal transparent latch with 3-state outputs Data sheet 2018-07-04
AN11051 Pin FMEA HEF4000 family Application note 2019-01-09
familyhef4000specification HEF/HEC4000B family specification overview Other type 2012-05-23

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Models

No documents available

PCB Symbol, Footprint and 3D Model

Model Name Description

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.