Data Sheet
SNx4AHCT244 Octal Buffers/Drivers With 3-State Outputs
1 Features
- Inputs are TTL-voltage compatible
- Latch-up performance exceeds 250mA
Per JESD 17 - 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
- Network Switches
- Power Infrastructures
- PCs and Notebooks
- Wearable Health and Fitness Devices
- Tests and Measurements
3 Description
These octal buffers/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.
Device Information
| PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE(3) |
|---|---|---|---|
| SNx4AHCT244 | N (PDIP, 20) | 24.33mm x 9.4mm | 25.40mm x 6.35mm |
| DW (SOIC, 20) | 12.80mm × 10.3mm | 12.8mm x 7.5mm | |
| NS (SOP, 20) | 12.60mm x 7.8mm | 12.6mm x 5.30mm | |
| DB (SSOP, 20) | 7.2mm × 7.8mm | 7.50mm x 5.30mm | |
| DGV (TVSOP, 20) | 5.00mm x 6.4mm | 5.00mm x 4.40mm | |
| PW (TSSOP, 20) | 6.50mm × 6.4mm | 6.50mm x 4.40mm | |
| J (CDIP, 20) | 24.2mm x 7.62mm | 24.2mm x 6.92mm | |
| W (CFP, 20) | 13.09mm x 8.13mm | 13.09mm x 6.92mm |
(1) For more information, see Section 11.
(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.
Simplified
Schematic4 Pin Configuration and Functions
 |
 |
|
Figure 4-1 SN54AHCT244 J or W Package; SN74AHCT244 DB, DGV, DW, N, NS,
or PW Package (Top View)
|
Figure 4-2 SN54AHCT244 FK Package (Top View)
|
Table 4-1 Pin Functions
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | 1 OE | I | Output Enable 1 |
| 2 | 1A1 | I | Input 1A1 |
| 3 | 2Y4 | O | Output 2Y4 |
| 4 | 1A2 | I | Input 1A2 |
| 5 | 2Y3 | O | Output 2Y3 |
| 6 | 1A3 | I | Input 1A3 |
| 7 | 2Y2 | O | Output 2Y2 |
| 8 | 1A4 | I | Input 1A4 |
| 9 | 2Y1 | O | Output 2Y1 |
| 10 | GND | – | Ground Pin |
| 11 | 2A1 | I | Input 2A1 |
| 12 | 1Y4 | O | Output 1Y4 |
| 13 | 2A2 | I | Input 2A2 |
| 14 | 1Y3 | O | Output 1Y3 |
| 15 | 2A3 | I | Input 2A3 |
| 16 | 1Y2 | O | Output 1Y2 |
| 17 | 2A4 | I | Input 2A4 |
| 18 | 1Y1 | O | Output 1Y1 |
| 19 | 2 OE | I | Output Enable 2 |
| 20 | VCC | – | Power Pin |
