74HCT244D: 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.
74HCT244D: Product Block Diagram
74HCT244D: Block Diagram
74HCT244D: Block Diagram
SOT163-1
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 (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
- 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 | Family | VCC (V) | Function | Logic switching levels | Description | Package version | Output drive capability (mA) | fmax (MHz) | No of bits | tpd (ns) | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HCT244D | Active | HC(T) | 4.5 - 5.5 | Buffers/inverters/drivers | TTL | TTL enabled (3-state) | SOT163-1 | +/- 6 | 36 | 8 | 11 | low | -40~125 | 85 | 27.5 | 61 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
- Octal buffer/line driver; 3-state 74HCT244PW
- Live Insertion Aspects of Philips Logic Families 74HC_T_245_Q100
- Pin FMEA 74HC/74HCT family 74HC_T_597_Q100
- Power considerations when using CMOS and BiCMOS logic devices 74AHCT244PW
- HC/T User Guide 74HCU04PW
- ロジック製品セレクションガイド... 74LVC_H_245A_Q100
- Logic selection guide 2016 74LVC_H_245A_Q100
- D12_PC_sch_ver2_0_1 74HCT244PW
- hc Spice model 74HCU04PW
- SOT163-1 LPC1112FD20
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
- Reflow_Soldering_Profile Wave_Soldering_Profile LPC1112FD20
- 74HC_T_244
- 74LVC_H_245A
- SA615
