74HCT244DB: 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.
74HCT244DB: Product Block Diagram
74HCT244DB: Block Diagram
74HCT244DB: 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 (1)
| Name/Description | Modified Date |
|---|---|
| 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 |
Packing (1)
| 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 |
Supporting Information (1)
| Name/Description | Modified Date |
|---|---|
| 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 | Family | VCC (V) | Function | Logic switching levels | Description | Output drive capability (mA) | Package version | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HCT244DB | Active | HC(T) | 4.5 - 5.5 | Buffers/inverters/drivers | TTL | TTL enabled (3-state) | +/- 6 | SOT339-1 | 36 | 8 | 11 | low | -40~125 | 136 | 40.0 | SSOP20 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
- 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
- plastic shrink small outline package; 20 leads; body width 5.3 mm 74LVC373A_Q100
- SSOP-TSSOP-VSO-WAVE LPC1114FDH28
- SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code... 74LVC373A_Q100
- 74HC_T_244
- 74LVC_H_245A
- 74LVT640
