74HC595D vs SN74HC595N: Which 74HC595 Package?
2026-10-14 · PartVane Electronics
The 74HC595D (Nexperia, SO16) and SN74HC595N (Texas Instruments, PDIP-16) are the same 8-bit serial-in, parallel-out shift register with 3-state output latches. The real difference is the package. This comparison uses only the Nexperia 74HC595 datasheet (Rev. 12) and the TI SNx4HC595 datasheet (SCLS041J).
Key points from the datasheets
| Item | 74HC595D | SN74HC595N |
|---|---|---|
| Function | 8-bit shift register, 3-state storage register | 8-bit shift register, 3-state storage register |
| Supply voltage | 2.0 V to 6.0 V | 2 V to 6 V |
| Package | SO16 (SOT109-1), surface mount | PDIP (16), 19.31 mm x 6.35 mm, through-hole |
| Temperature range | -40 to +125 C | See TI datasheet for the orderable part |
| Typical speed | 100 MHz shift-out frequency | tpd 13 ns typical |
| Output drive | See Nexperia datasheet | +/-6 mA at 5 V |
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Which to choose
- 74HC595D: surface-mount boards and automated assembly.
- SN74HC595N: breadboards, prototypes and through-hole boards.
Before swapping
Both use the same 16-pin function order (SER, SRCLK, RCLK, OE, SRCLR, QA to QH, QH'), but the footprints differ, so a PCB layout cannot be reused between SO16 and PDIP. Compare the electrical tables of both datasheets (output drive, timing at your supply voltage) before replacing one with the other.
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Sources
- https://assets.nexperia.com/documents/data-sheet/74HC_HCT595.pdf
- https://www.ti.com/product/SN74HC595
Parts in This Article
- 74HC595D datasheet, pinout & specs – Nexperia
- SN74HC595N datasheet, pinout & specs – Texas Instruments