HEF40373BT: Octal transparent latch with 3-state outputs
The HEF40373B is an octal D-type transparent latch with 3-state outputs. The device features latch enable (LE) and output enable (OE) inputs. When LE is HIGH, data at the inputs enter the latches. In this condition the latches are transparent, a latch output will change each time its corresponding D-input changes. When LE is LOW the latches store the information that was present at the inputs a set-up time preceding the HIGH‑to‑LOW transition of LE. A HIGH on OE causes the outputs to assume a high-impedance OFF‑state. Operation of the OE input does not affect the state of the latches.
Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
HEF40373BT: Product Block Diagram
SOT163-1
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Octal transparent latch with 3-state outputs (REV 1.0) PDF (85.0 kB) HEF40373B_CNV [English] | 01 Jan 1995 |
Application Notes (2)
| Name/Description | Modified Date |
|---|---|
| Pin FMEA HEF4000 family (REV 2.0) PDF (30.0 kB) AN11051 [English] | 21 Aug 2015 |
| A metastability primer (REV 1.0) PDF (40.0 kB) AN219 [English] | 13 Mar 2013 |
Brochures (2)
| Name/Description | Modified Date |
|---|---|
| 電圧レベルシフタ (REV 1.1) PDF (3.1 MB) 75017511_JP [English] | 16 Feb 2015 |
| Voltage translation: How to manage mixed-voltage designs with NXP® level translators (REV 1.0) PDF (2.6 MB) 75017511 [English] | 20 May 2014 |
Package Information (1)
| Name/Description | Modified Date |
|---|---|
| plastic small outline package; 20 leads; body width 7.5 mm (REV 1.0) PDF (335.0 kB) SOT163-1 [English] | 08 Feb 2016 |
Supporting Information (2)
| Name/Description | Modified Date |
|---|---|
| Reflow Soldering Profile (REV 1.0) PDF (34.0 kB) REFLOW_SOLDERING_PROFILE [English] | 30 Sep 2013 |
| Wave Soldering Profile (REV 1.0) PDF (20.0 kB) WAVE_SOLDERING_PROFILE [English] | 30 Sep 2013 |
Design Support
- HEF/HEC4000B family specification overview (REV 1.0) PDF FAMILYHEF4000SPECIFICATION 5/24/2012
Ordering Information
| Product | Status | Family | Function | VCC (V) | Logic switching levels | Description | Package version | Output drive capability (mA) | tpd (ns) | No of bits | Power dissipation considerations | Tamb (Cel) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name | No of pins |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HEF40373BT | Active | HEF4000B | Latches/registered drivers | 4.5 - 15 | CMOS | octal D-type transparent latch (3-state) | SOT163-1 | -50/+62 | 40 | 8 | medium | -40~85 | 76 | 18.7 | 52 | SO20 | 20 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HEF40373BT | | SOT163-1 | Reflow_Soldering_Profile
Wave_Soldering_Profile Reflow_Soldering_Profile Wave_Soldering_Profile | Reel 13" Q1/T1 CECC | Active | HEF40373BT,653 (9336 387 00653) | HEF40373BT | HEF40373BT |    | week 30, 2004 | 75.3 | 2.99 | 3.34E8 | 1 | 1 |
| Bulk Pack, CECC | Active | HEF40373BT,652 (9336 387 00652) | HEF40373BT | HEF40373BT | | week 30, 2004 | 75.3 | 2.99 | 3.34E8 | 1 | 1 |
- Octal transparent latch with 3-state outputs HEF40373BT
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- A metastability primer 74AHC573PW
- 電圧レベルシフタ 74AVC16245DGG-Q100
- Voltage translation: How to manage mixed-voltage designs with NXP® level translators 74AVC16245DGG-Q100
- HEF/HEC4000B family specification overview HEF40373BT
- SOT163-1 LPC1112FD20
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
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- SA615
