規格
| 屬性 | 價值 |
| Supplier | Nexperia USA Inc. |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Series | 74LVC |
| Part Status | Active |
| Logic Type | Shift Register |
| Output Type | Tri-State |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Function | Serial to Parallel, Serial |
| Voltage - Supply | 1.65V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
概述
Description
74LVC595ABQ,115 is an 8-bit serial-in/parallel-out storage register with tri-state outputs (a.k.a. octal shift register with latch). It uses SER for serial data input, SRCLK to shift data, and RCLK to latch the shifted data to QA–QH. It has an asynchronous clear (SRCLR) and an active-low output enable (OE#). When OE# is low, outputs are enabled; when high, outputs go high-Z. Data is clocked in serially and then parallelized on the latch edge, enabling easy I/O expansion with a SPI-like interface.
Key points:
- 8-bit shift register + 8-bit storage register with 3-state outputs
- Pins: SER, SRCLK, RCLK, SRCLR, OE#, QA–QH, Vcc, GND
- Operates typically on 1.65–3.6 V (LVC family)
- ABQ indicates RoHS-compliant package; 115 is a date/lot code
Common uses: microcontroller I/O expansion, LED matrices, bus sharing.
Key points:
- 8-bit shift register + 8-bit storage register with 3-state outputs
- Pins: SER, SRCLK, RCLK, SRCLR, OE#, QA–QH, Vcc, GND
- Operates typically on 1.65–3.6 V (LVC family)
- ABQ indicates RoHS-compliant package; 115 is a date/lot code
Common uses: microcontroller I/O expansion, LED matrices, bus sharing.
Equivalent
Equivalent parts (8-bit SER to POUT register with 3-state outputs):
- TI SN74LVC595ABQ (same device)
- NXP/Nexperia 74LVC595APW, 74LVC595ADW
- STMicroelectronics 74LVC595D
- On Semiconductor MC74LVC595A
- 74AHC595A (alternate fast family)
- 74HC595 / 74HCT595 (5V-only substitutes; different I/O thresholds)
- TI SN74LVC595ABQ (same device)
- NXP/Nexperia 74LVC595APW, 74LVC595ADW
- STMicroelectronics 74LVC595D
- On Semiconductor MC74LVC595A
- 74AHC595A (alternate fast family)
- 74HC595 / 74HCT595 (5V-only substitutes; different I/O thresholds)
Features
Key features of SN74LVC595ABQ (8-bit shift-and-store register with 3-state outputs):
- 8-bit serial-in, parallel-out shift register with an 8-bit storage (latch) register
- DS: serial data input; SH_CP: shift clock; ST_CP: storage/latch clock
- MR: asynchronous master reset
- OE: output enable (active-low) for 3-state outputs
- Data shifts on rising edge of SH_CP; data is latched to outputs on rising edge of ST_CP
- Q0–Q7 outputs can be forced to high impedance when OE is high
- Single-supply operation (LVC): typically 1.65 V to 3.6 V
- Ideal for I/O expansion, LED/display driving, keypad scanning, and other microcontroller interface tasks
- RoHS-compliant package variants (ABQ family)
Note: Exact temperature range and drive specs depend on the specific package and speed grade in your lot.
- 8-bit serial-in, parallel-out shift register with an 8-bit storage (latch) register
- DS: serial data input; SH_CP: shift clock; ST_CP: storage/latch clock
- MR: asynchronous master reset
- OE: output enable (active-low) for 3-state outputs
- Data shifts on rising edge of SH_CP; data is latched to outputs on rising edge of ST_CP
- Q0–Q7 outputs can be forced to high impedance when OE is high
- Single-supply operation (LVC): typically 1.65 V to 3.6 V
- Ideal for I/O expansion, LED/display driving, keypad scanning, and other microcontroller interface tasks
- RoHS-compliant package variants (ABQ family)
Note: Exact temperature range and drive specs depend on the specific package and speed grade in your lot.
Pinout
- Pin count: 16 pins (typical for 74LVC595 in DIP/SOIC/TSSOP packages).
- Function: Octal D-type storage register with 3-state outputs (serial-in/parallel-out). It shifts data in on DS with SH_CP, latches to Q0–Q7 on ST_CP, and enables/disables outputs via OE\; MR\ clears the storage register. Also provides a Q7\’ serial out for chaining. Used to expand I/O.
- Function: Octal D-type storage register with 3-state outputs (serial-in/parallel-out). It shifts data in on DS with SH_CP, latches to Q0–Q7 on ST_CP, and enables/disables outputs via OE\; MR\ clears the storage register. Also provides a Q7\’ serial out for chaining. Used to expand I/O.
Manufacturer
- Manufacturer: Nexperia
- Company type: A global semiconductor company (headquartered in the Netherlands) that designs and manufactures discrete components, logic ICs (including 74LVC series), and MOSFETs for automotive, industrial, and consumer applications.
- Company type: A global semiconductor company (headquartered in the Netherlands) that designs and manufactures discrete components, logic ICs (including 74LVC series), and MOSFETs for automotive, industrial, and consumer applications.
Application
74LVC595ABQ,115 is an 8-bit serial-in/parallel-out shift register with a storage latch and tri-state outputs. Typical application areas:
- Microcontroller I/O expansion with a small pin count (SPI-like interface)
- Serial-to-parallel data expansion and buffering
- Driving LEDs/indicators or LED matrices via latch updates
- Bus buffering/isolating and temporary storage with tri-state outputs
- Cascaded expansion to drive many outputs from a single controller
- General-purpose register for shared buses in embedded/industrial systems
- Microcontroller I/O expansion with a small pin count (SPI-like interface)
- Serial-to-parallel data expansion and buffering
- Driving LEDs/indicators or LED matrices via latch updates
- Bus buffering/isolating and temporary storage with tri-state outputs
- Cascaded expansion to drive many outputs from a single controller
- General-purpose register for shared buses in embedded/industrial systems
Package
TSSOP-20 (20-pin thin small‑outline package). The ABQ suffix on TI parts denotes the RoHS/lead‑free variant.
