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74HC237
Datasheet
General description
The 74HC237 is a high-speed Si-gate CMOS device and is pin compatible with low power Schottky TTL (LSTTL). The 74HC237 is specified in compliance with JEDEC standard no. 7A.
The 74HC237 is a 3-to-8 line decoder, demultiplexer with latches at the three address inputs (An). The 74HC237 essentially combines the 3-to-8 decoder function with a 3-bit storage latch. When the latch is enabled (LE = LOW), the 74HC237 acts as a 3-to-8 active LOW decoder. When the latch enable (LE) goes from LOW-to-HIGH, the last data present at the inputs before this transition, is stored in the latches. Further address changes are ignored as long as LE remains HIGH.
The output enable input (E1 and E2) controls the state of the outputs independent of the address inputs or latch operation. All outputs are HIGH unless E1 is LOW and E2 is HIGH.
The 74HC237 is ideally suited for implementing non-overlapping decoders in 3-state systems and strobed (stored address) applications in bus oriented systems.
Features
- Combines 3-to-8 decoder with 3-bit latch
- Multiple input enable for easy expansion or independent controls
- Active HIGH mutually exclusive outputs
- Low-power dissipation
- Complies with JEDEC standard no. 7A
- ESD protection:
- HBM EIA/JESD22-A114-B exceeds 2000 V
- MM EIA/JESD22-A115-A exceeds 200 V.
- Multiple package options
- Specified from -40 Cel to +80Cel and from -40 Cel to +125 Cel.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74HC237D | 74HC237D | 9337 571 90652 | Volume production | SOT109-1
(SO16) | Bulk Pack, CECC | Standard Marking | 74HC237D
| week 6, 2004 |
| 74HC237D | 74HC237D-T | 9337 571 90653 | Volume production | SOT109-1
(SO16) | Reel Pack, SMD, 13", CECC | Standard Marking | 74HC237D
| week 6, 2004 |
| 74HC237DB | 74HC237DB | 9351 898 20112 | Volume production | SOT338-1
(SSOP16) | Tube | Standard Marking | 74HC237DB
| week 12, 2005 |
| 74HC237DB | 74HC237DB-T | 9351 898 20118 | Volume production | SOT338-1
(SSOP16) | Reel Pack, SMD, 13" | Standard Marking | 74HC237DB
| week 12, 2005 |
| 74HC237N | 74HC237N | 9337 571 80652 | Volume production | SOT38-4
(DIP16) | Bulk Pack, CECC | Standard Marking | 74HC237N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74HC237D | 9337 571 90652 | 0.2900 | NA | AVNET ELECTRONICS MARKETING | 1,630 | 7/4/2008 | Buy online | Order samples |
| NA | ARROW ELECTRONICS | 897 | 7/4/2008 | Buy online | ||||
| 74HC237D | 9337 571 90653 | 0.2900 | NA | FUTURE ELECTRONICS | 20,514 | 7/4/2008 | Buy online | Order samples |
| NA | ARROW ELECTRONICS | 2,500 | 7/4/2008 | Buy online | ||||
| 74HC237DB | 9351 898 20112 | 0.3300 | NA | DIGI-KEY CORPORATION | 34 | 6/29/2008 | Buy online | Order samples |
| 74HC237DB | 9351 898 20118 | 0.3300 | NA | AVNET ELECTRONICS MARKETING | 36,000 | 7/4/2008 | Buy online | Order samples |
| 74HC237N | 9337 571 80652 | 0.3000 | NA | DIGI-KEY CORPORATION | 2,501 | 6/29/2008 | Buy online | Order samples |
| NA | FUTURE ELECTRONICS | 2,207 | 7/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 1,960 | 7/6/2008 | Buy online | ||||
| NA | AVNET ELECTRONICS MARKETING | 743 | 7/4/2008 | Buy online | ||||
| NA | ARROW ELECTRONICS | 205 | 7/4/2008 | Buy online |
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| 74HC237D | SOT109-1
(SO16) | 3-to-8 Decoder/Demultiplexer with Address Latches | 16@5V | 2.0-6.0 V | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC237DB | SOT338-1
(SSOP16) | 3-to-8 Decoder/Demultiplexer with Address Latches | 16@5V | 2.0-6.0 V | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC237N | SOT38-4
(DIP16) | 3-to-8 Decoder/Demultiplexer with Address Latches | 16@5V | 2.0-6.0 V | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
Similar products
74HC237 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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