74HC(T)244: Octal buffer, line driver; 3-state
The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE 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_244: Product Block Diagram
74HC_T_244: Block Diagram
74HC_T_244: Block Diagram
Outline 3d SOT339-1
Multiple package options
Specified from -40 °C to +85 °C and -40 °C to +125 °C
Data Sheets (1)
| Name/Description | Modified Date |
|---|---|
| Octal buffer/line driver; 3-state (REV 5.0) PDF (210.0 kB) 74HC_HCT244 [English] | 26 Feb 2016 |
Application Notes (3)
| 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 |
| Power considerations when using CMOS and BiCMOS logic devices (REV 1.0) PDF (100.0 kB) AN263 [English] | 05 Feb 2002 |
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 (4)
| 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 |
| plastic shrink small outline package; 20 leads; body width 5.3 mm (REV 1.0) PDF (325.0 kB) SOT339-1 [English] | 08 Feb 2016 |
| plastic thin shrink small outline package; 20 leads; body width 4.4 mm (REV 1.0) PDF (304.0 kB) SOT360-1 [English] | 08 Feb 2016 |
| plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 20 terminals; body 2.5 x 4.5 x... (REV 1.0) PDF (190.0 kB) SOT764-1 [English] | 08 Feb 2016 |
Packing (3)
| Name/Description | Modified Date |
|---|---|
| SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code... (REV 1.0) PDF (204.0 kB) SOT339-1_118 [English] | 02 Oct 2015 |
| DHVQFN20; Reel pack; SMD, 7" Q1/T1 Standard product orientation Orderable part number ending ,115 or... (REV 4.0) PDF (203.0 kB) SOT764-1_115 [English] | 23 Apr 2013 |
| TSSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 4.0) PDF (225.0 kB) SOT360-1_118 [English] | 15 Apr 2013 |
Supporting Information (3)
| 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 |
| Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE [English] | 08 Oct 2009 |
Design Support
- D12_PC_sch_ver2_0_1 (REV 0.1) ZIP D12_PC_SCH_VER2_0_1 4/23/1998
SPICE model
- hc Spice model (REV 1.0) ZIP HC 5/7/2013
Ordering Information
| Product | Status |
|---|---|
| 74HCT244PW | Active |
| 74HC244DB | Active |
| 74HC244PW | Active |
| 74HC244D | Active |
| 74HCT244D | Active |
| 74HCT244DB | Active |
| 74HCT244BQ | Active |
| 74HC244BQ | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HCT244DB | | SOT339-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT244DB,118 (9351 668 80118) | HCT244 | 74HCT244DB |    | week 17, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT244DB,112 (9351 668 80112) | HCT244 | 74HCT244DB | | week 17, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC244DB | | SOT339-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC244DB,118 (9351 668 90118) | HC244 | 74HC244DB | | week 17, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC244DB,112 (9351 668 90112) | HC244 | 74HC244DB | | week 17, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC244D |  | SOT163-1 | Reflow_Soldering_Profile
Wave_Soldering_Profile Reflow_Soldering_Profile Wave_Soldering_Profile | Reel 13" Q1/T1 CECC | Active | 74HC244D,653 (9337 134 20653) | 74HC244D | 74HC244D | | week 13, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HC244D,652 (9337 134 20652) | 74HC244D | 74HC244D | | week 13, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT244D | | SOT163-1 | Reflow_Soldering_Profile
Wave_Soldering_Profile Reflow_Soldering_Profile Wave_Soldering_Profile | Reel 13" Q1/T1 CECC | Active | 74HCT244D,653 (9337 134 30653) | 74HCT244D | 74HCT244D | | week 30, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HCT244D,652 (9337 134 30652) | 74HCT244D | 74HCT244D | | week 30, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC244PW |  | SOT360-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC244PW,118 (9351 746 40118) | HC244 | 74HC244PW |  | week 7, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC244PW,112 (9351 746 40112) | HC244 | 74HC244PW | | week 7, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HCT244BQ |  | SOT764-1 | Reel 7" Q1/T1 | Active | 74HCT244BQ,115 (9352 737 29115) | HCT244 | 74HCT244BQ | | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 | |
| 74HCT244PW | | SOT360-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT244PW,118 (9351 652 20118) | HCT244 | 74HCT244PW | | week 17, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT244PW,112 (9351 652 20112) | HCT244 | 74HCT244PW | | week 17, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 | ||||
| 74HC244BQ | | SOT764-1 | Reel 7" Q1/T1 | Active | 74HC244BQ,115 (9352 736 78115) | HC244 | 74HC244BQ | | Always Pb-free | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
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