SN74LVC07APWRG4 - Hex Open-Drain Buffer 1.65-5.5V | TI
MPN: SN74LVC07APWRG4 ✓ Hoạt độngSN74LVC07APWRG4 Tóm tắt
A buffer/driver is a logic IC that provides signal isolation and current reinforcement between a driving stage and a load. Within the logic family hierarchy, the SN74LVC07A belongs to the Low-Voltage CMOS (LVC) category of buffers, drivers, and receivers, which sit between pure combinational logic gates and full line transceivers. Open-drain outputs, the defining feature of this part, can only pull low and require an external pull-up resistor to define the high level, allowing level shifting and wired-AND configurations.
Key features include six independent non-inverting elements with open-drain outputs rated to sink 24 mA at outputs, a wide 1.65 V to 5.5 V VCC range, 5.5 V maximum input tolerance from any supply, and operation across -40 C to +125 C. Maximum propagation delay is approximately 14 ns at 3.3 V. Typical low-level ground bounce (VOLP) is very small at VCC = 3.3 V, supporting clean switching in mixed-signal boards.
The LVC family uses CMOS technology with input clamp structure for partial power-down protection using Ioff current, which prevents damaging back-feed when VCC is removed. This makes the part well suited for hot-insertion and multi-rail designs.
Typical applications include I2C-style open-drain bus driving, LED indicators, level shifting between 3.3 V and 5 V domains, wired-OR logic, and driving relays or optocoupler inputs through external pull-ups.
Design consideration: size the external pull-up resistor for the required sink current and rise time; with open-drain outputs the high-level threshold depends entirely on the pull-up rail, so set it to the voltage domain of the receiving logic.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho SN74LVC07APWRG4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với SN74LVC07APWRG4 (cùng hình factor và footprint) — khác nhau ở Logic Function, Package.
SN74LVC07APWR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →SN74LVC07APWTG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SN74LVC07APWRE4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
74LVC07APW
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
74LVC07APW-Q100J
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SN74LVC07AD
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SN74LVC07APWRG4 Tỷ lệ tối đa & tính chất điện
| Logic Function | Hex non-inverting buffer/driver |
| Kiểu đầu ra | Open drain |
| Number of Elements | 6 |
| Bits per Element | 1 |
| Supply Voltage Range | 1.65 V to 5.5 V |
| Phạm vi điện áp đầu vào | 5.5 V max (independent of VCC) |
| Polarity | Non-inverting |
| Propagation Delay (Max) | 14 ns at 3.3 V |
| Output Low Current (Sink) | 24 mA |
| Nhiệt độ hoạt động | -40C to +125C |
| Hộp | 14-TSSOP (0.173 in, 4.40 mm width) |
| Số chân | 14 |
| Logic Family | LVC (Low-Voltage CMOS) |
| Kiểu lắp đặt | Surface Mount |
| Ioff Partial Power-Down | Supported |
| Trạng thái RoHS | Compliant |
Cấu hình chân SN74LVC07APWRG4
| Chân 1 | 1A — Input, buffer 1 |
| Chân 2 | 1Y — Open-drain output, buffer 1 |
| Chân 3 | 2A — Input, buffer 2 |
| Chân 4 | 2Y — Open-drain output, buffer 2 |
| Chân 5 | 3A — Input, buffer 3 |
| Chân 6 | 3Y — Open-drain output, buffer 3 |
| Chân 7 | GND — Ground |
| Chân 8 | 4Y — Open-drain output, buffer 4 |
| Chân 9 | 4A — Input, buffer 4 |
| Chân 10 | 5Y — Open-drain output, buffer 5 |
| Chân 11 | 5A — Input, buffer 5 |
| Chân 12 | 6Y — Open-drain output, buffer 6 |
| Chân 13 | 6A — Input, buffer 6 |
| Chân 14 | VCC — Supply voltage, 1.65 V to 5.5 V |
Ứng dụng tiêu biểu
SN74LVC07APWRG4 phù hợp cho 6 Áp dụngs: Open-Drain Bus / Wired-AND Logic, 3.3 V to 5 V Level Shifting, LED and Indicator Driving, Optocoupler and Relay Coil Driving, Microcontroller GPIO Fan-Out and Protection, Test and Measurement Interface Logic.
Open-Drain Bus / Wired-AND Logic
The SN74LVC07APWRG4 is purpose-built for wired-AND buses: each open-drain output can only pull the shared line low, so multiple buffers can drive one node without contention while a common pull-up resistor defines the high level. The 24 mA sink rating exceeds the 3 mA requirement of I2C-style buses, and the 1.65 V to 5.5 V supply range lets the bus sit at 3.3 V or 5 V. Place the device between a microcontroller GPIO and the shared bus with 2.2 kOhm to 4.7 kOhm pull-ups; unlike push-pull drivers, no bus arbitration logic is needed, which removes fail states from multi-master systems.
Được đề xuất
3.3 V to 5 V Level Shifting
The SN74LVC07APWRG4 shifts logic levels upward without a dedicated translator IC: power VCC at 3.3 V, drive the input with a 3.3 V signal, and pull each open-drain output up to 5 V. Because the high level is set by the pull-up rail, the receiving 5 V logic sees a valid VIH while the input tolerates 5.5 V maximum regardless of supply, permitting bidirectional domain crossings on separate channels. The 14 ns max propagation delay at 3.3 V keeps translation transparent below tens of MHz. For reverse 5 V to 3.3 V direction, connect through the same device by pulling up to the 3.3 V rail instead.
Được đề xuất
LED and Indicator Driving
Each SN74LVC07APWRG4 output sinks up to 24 mA, sufficient to drive status LEDs directly through series resistors in a common-anode arrangement: the LED anode ties to the rail and the buffer pulls the cathode low to illuminate. Active-low drive suits microcontrollers whose reset or fault outputs idle high. Six independent channels in one TSSOP-14 package consolidate a typical front-panel indicator cluster, and open-drain behavior means an unused or unpowered buffer simply releases the LED rather than fighting the rail. Size series resistors for 5 to 10 mA LED current to stay well within the 24 mA rating.
Được đề xuất
Optocoupler and Relay Coil Driving
The SN74LVC07APWRG4 drives optocoupler LED inputs and small relay coils through the same active-low open-drain topology used for indicators. With a 24 mA sink capacity per output, it directly sinks optocoupler input current (typically 5 to 20 mA) with series limiting resistors, providing galvanically isolated control of motor drivers or AC loads on the far side of the isolator. For relays, the buffer can sink the base of an external PNP/NPN stage or directly drive low-current relays with a suitable pull-up. The -40 C to +125 C range and Ioff partial power-down support industrial control panels where rails sequence at different times.
Được đề xuất
Microcontroller GPIO Fan-Out and Protection
The SN74LVC07APWRG4 offloads microcontroller GPIO pins that must drive multiple loads or connect to harsh external nodes. Because the buffer absorbs the load current, the MCU pin sees only a light input load, and the open-drain output isolates the MCU from pull-up rail transients. The 5.5 V input tolerance with Ioff current means signals can remain present while the buffer supply is absent during partial power-down, protecting the MCU input structure. Applications include boot-select straps, reset trees, and multi-board enable lines where one controller must safely control several 5 V subsystems from a 3.3 V domain.
Được đề xuất
Test and Measurement Interface Logic
In test fixtures and instrumentation, the SN74LVC07APWRG4 provides robust, tolerant interface glue logic between controller and device-under-test domains. The 5.5 V input tolerance withstands 5 V signal levels even when the buffer runs at 1.8 V, preventing damage from misconfigured fixture rails. Open-drain outputs wired together implement fault-flag aggregation: any test channel can assert a shared ALARM line low without contention. The 14 ns max propagation delay adds deterministic, sub-100 ns delay to timing-critical fixture paths, and the -40 C to +125 C operation covers rack environments with elevated internal temperatures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho SN74LVC07APWRG4 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | SN74LVC07APWR | SN74LVC07APWTG4 | 74LVC07APW | 74LVC07APW-Q100J | SN74LVC07AD |
|---|---|---|---|---|---|---|
| Package | TSSOP-14 (PW) | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | TSSOP-14 (PW) - same | SOIC-14 (D) - footprint differs |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | Toshiba | Texas Instruments |
| Function | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain | Hex non-inverting buffer, open drain |
| Supply Voltage Range | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V |
Bảo phân biệt quan trọng
- Packaging-variant interchangeability within TI (vsSN74LVC07APWR)
- Mixed-voltage tolerance (vs74LVC07APW)
- Footprint constraint vs same-die SOIC (vsSN74LVC07AD)
Ghi chú thiết kế
Size every open-drain pull-up resistor for both sink current and rise time. The output sinks up to 24 mA, but bus applications should limit continuous sink current to a few mA to keep VOL well below 0.4 V. Rise time equals roughly 0.85 x Rpullup x Cbus, so a 4.7 kOhm pull-up with 50 pF of capacitance gives about 200 ns - fine for I2C 100 kHz but too slow for fast parallel strobes. Estimated calculation: use Rp max = tr / (0.8473 x Cbus) per standard open-drain bus methodology.
Place a 0.1 uF ceramic decoupling capacitor within 2 mm of the VCC pin (pin 14) to ground, plus one bulk 1 uF per board region. Tie the exposed board ground directly to pin 7. Because outputs only sink, trace impedance on the pull-up rail matters more than on the output trace; route pull-up resistors close to the receiving device so the high level is clean. TSSOP-14 leads support standard 0.65 mm pitch footprint per IPC-7351 conventions.
The most common error with open-drain buffers is forgetting the pull-up entirely, leaving outputs floating high-impedance when released - the receiving logic reads random values. Second, do not exceed the 24 mA sink rating when driving LEDs or relay stages; check worst-case current with a shorted LED resistor at high temperature. Third, remember inputs tolerate 5.5 V only when the device clamp structure is intact - the Ioff feature protects during VCC = 0 but never exceed absolute maxima on A inputs.
Thông tin tuân thủ
RoHS compliance inferred from the G4 (Green/RoHS) TI ordering suffix and current production status; verify REACH and halogen-free declarations via the TI product page quality portal for the exact date code.
