74HC(T)251: 8-input multiplexer; 3-state
The 74HC251; 74HCT251 is an 8-bit multiplexer with eight binary inputs (I0 to I7), three select inputs (S0 to S2) and an output enable input (OE). The select inputs select one of the eight binary inputs and route it to the complementary outputs (Y and Y). A HIGH on OE causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.
74HC_T_251: Product Block Diagram
Outline 3d SOT338-1
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| 8-input multiplexer; 3-state (REV 4.0) PDF (174.0 kB) 74HC_HCT251 [English] | 01 Feb 2016 |
Application Notes (2)
| Name/Description | Modified Date |
|---|---|
| Live Insertion Aspects of Philips Logic Families (REV 1.0) PDF (73.0 kB) AN252 [English] | 13 Mar 2013 |
| Pin FMEA 74HC/74HCT family (REV 1.0) PDF (51.0 kB) AN11044 [English] | 16 Mar 2011 |
Users Guides (1)
| Name/Description | Modified Date |
|---|---|
| HC/T User Guide (REV 1.0) PDF (508.0 kB) HCT_USER_GUIDE [English] | 01 Nov 1997 |
Selector Guides (2)
| Name/Description | Modified Date |
|---|---|
| ロジック製品セレクションガイド... (REV 1.0) PDF (38.3 MB) LOGIC_SELECTION_GUIDE_2015_JP [English] | 19 Nov 2015 |
| Logic selection guide 2016 (REV 1.1) PDF (15.3 MB) 75017285 [English] | 08 Jan 2015 |
Package Information (3)
| Name/Description | Modified Date |
|---|---|
| plastic small outline package; 16 leads; body width 3.9 mm (REV 1.0) PDF (192.0 kB) SOT109-1 [English] | 08 Feb 2016 |
| plastic shrink small outline package; 16 leads; body width 5.3 mm (REV 1.0) PDF (306.0 kB) SOT338-1 [English] | 08 Feb 2016 |
| plastic thin shrink small outline package; 16 leads; body width 4.4 mm (REV 1.0) PDF (300.0 kB) SOT403-1 [English] | 08 Feb 2016 |
Packing (2)
| Name/Description | Modified Date |
|---|---|
| SO16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering... (REV 4.0) PDF (210.0 kB) SOT109-1_118 [English] | 24 Apr 2013 |
| TSSOP16; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (218.0 kB) SOT403-1_118 [English] | 08 Apr 2013 |
Supporting Information (4)
| Name/Description | Modified Date |
|---|---|
| Footprint for reflow soldering (REV 1.0) PDF (9.0 kB) SO-SOJ-REFLOW [English] | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (8.0 kB) SO-SOJ-WAVE [English] | 08 Oct 2009 |
| Footprint for reflow soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-REFLOW [English] | 08 Oct 2009 |
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English] | 08 Oct 2009 |
Ordering Information
| Product | Status |
|---|---|
| 74HCT251D | Active |
| 74HCT251PW | Active |
| 74HC251DB | Active |
| 74HCT251DB | Active |
| 74HC251D | Active |
| 74HC251PW | Active |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HCT251DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT251DB,118 (9351 886 40118) | HCT251 | 74HCT251DB |    | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT251DB,112 (9351 886 40112) | HCT251 | 74HCT251DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC251D |  | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HC251D,653 (9337 135 20653) | 74HC251D | 74HC251D |  | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HC251D,652 (9337 135 20652) | 74HC251D | 74HC251D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT251D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HCT251D,653 (9337 135 30653) | 74HCT251D | 74HCT251D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HCT251D,652 (9337 135 30652) | 74HCT251D | 74HCT251D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC251PW |  | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC251PW,118 (9351 883 90118) | HC251 | 74HC251PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC251PW,112 (9351 883 90112) | HC251 | 74HC251PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC251DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC251DB,118 (9351 886 50118) | HC251 | 74HC251DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC251DB,112 (9351 886 50112) | HC251 | 74HC251DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT251PW | | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT251PW,118 (9351 883 80118) | HCT251 | 74HCT251PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT251PW,112 (9351 883 80112) | HCT251 | 74HCT251PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
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