Data Sheet
SNx4HC244 Octal Buffers and Line Drivers With 3-State Outputs
1 Features
- Wide operating voltage range of 2V to 6V
- High-current outputs drive up to 15 LSTTL loads
- 3-state outputs drive bus lines or buffer memory address registers
- Low power consumption: ICC, 80µA (maximum)
- Typical tpd = 11ns
- ±6mA output drive at 5V
- Low input current of 1µA (maximum)
- On products compliant to MIL-PRF-38535,
all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
2 Applications
- Servers
- LED Displays
- Network Switches
- Telecom Infrastructure
- Motor Drivers
- I/O Expanders
3 Description
The SNx4HC244 octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HC244 devices are organized as two 4-bit buffers and drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.
Device
Information
| PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE(3) |
|---|---|---|---|
| SN54HC244 | J (CDIP, 20) | 24.38mm × 7.62mm | 24.38mm × 6.92mm |
| W (CFP, 20) | 13.72mm × 8.13mm | 13.72mm × 6.92mm | |
| FK (LCCC, 20) | 8.89mm × 8.89mm | 8.89mm × 8.89mm | |
| SN74HC244 | DB (SSOP, 20) | 7.2mm × 7.8mm | 7.2mm × 5.3mm |
| DW (SOIC, 20) | 12.80mm × 10.3mm | 12.8mm × 7.5mm | |
| N (PDIP, 20) | 24.33mm x 9.4mm | 24.33mm × 6.35mm | |
| NS (SOP, 20) | 12.6mm × 7.8mm | 12.6mm × 5.3mm | |
| PW (TSSOP, 20) | 6.5mm × 6.4mm | 6.5mm × 4.4mm |
(1) For more information, see Mechanical, Packaging, and Orderable Information.
(2) The package size (length × width) is a nominal value and includes pins, where
applicable.
(3) The body size (length × width) is a nominal value and does not include pins.
Logic Diagram (Positive Logic)