Onsemi \u7684 NC7SZ126P5X \u662f TinyLogic UHS \u7cfb\u5217\u4e2d\u7684\u4e00\u6b3e\u5177\u6709\u4e09\u6001\u8f93\u51fa\u7684\u5355\u8def\u975e\u53cd\u76f8\u7f13\u51b2\u5668\uff0c\u91c7\u7528 5 \u5f15\u811a SC-70-5 (SC-88A) \u5c01\u88c5\u3002\u5b83\u7684\u5de5\u4f5c\u7535\u538b\u4e3a 1.65 V \u81f3 5.5 V\uff0c5 V \u65f6\u7684\u5178\u578b\u4f20\u64ad\u5ef6\u8fdf\u4e3a 2.6 ns\uff0c3 V \u65f6\u7684\u8f93\u51fa\u9a71\u52a8\u4e3a +\/-24 mA\uff08\u6700\u5927 32 mA\uff09\uff0c\u8fc7\u538b\u8010\u53d7\u8f93\u5165\u7535\u538b\u9ad8\u8fbe 5.5 V\uff0c\u5e76\u5177\u6709\u6389\u7535\u9ad8\u963b\u6297 I\/O\u3002\u8f93\u51fa\u542f\u7528 (OE) \u5f15\u811a\u9ad8\u7535\u5e73\u6709\u6548\u65f6\u542f\u7528\u8f93\u51fa\uff1bOE \u4f4e\u7535\u5e73\u65f6\u8f93\u51fa\u5904\u4e8e\u9ad8 Z \u72b6\u6001\u3002\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u4e3a -40C \u81f3 +85C\u3002\u540e\u7f00 P5X \u8868\u793a SC-70 \u5377\u5e26\uff083000 \u4e2a\/\u5377\uff09\u3002.<\/p>","protected":false},"excerpt":{"rendered":"
The NC7SZ126P5X from onsemi is a single non-inverting buffer with 3-state output from the TinyLogic UHS family in a 5-pin SC-70-5 (SC-88A) package. It operates from 1.65 V to 5.5 V with 2.6 ns typical propagation delay at 5 V, +\/-24 mA output drive at 3 V (32 mA max), over-voltage tolerant inputs up to […]<\/p>\n","protected":false},"author":2,"featured_media":2261,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[144],"class_list":["post-2071","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-on"],"acf":{"brief_explanation":"Non-inv buffer, 3-state output, 1.65-5.5V, 2.6ns tPD, +\/-24mA drive, SC-70-5, OE active-high","date_code":"","package_case":"SC-70-5 \/ SC-88A \/ SOT-353 (2.0 x 1.25 x 1.0 mm, 0.65mm pitch)","in_stock":0,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/nc7sz126-d.pdf","price":"$0.23 (1K+ pcs)","product_introduction":"The NC7SZ126 from onsemi's TinyLogic UHS (Ultra-High Speed) family is a single non-inverting buffer with 3-state output. The NC7SZ126P5X is the SC-70-5 (SC-88A) tape-and-reel version with 3000 units per reel. It is also available in SOT-23-5 (M5X), MicroPak-6 (L6X), and UDFN-6 (FHX) packages.\n\nWhen the output enable (OE) pin is HIGH, the buffer passes the input to the output with only 2.6 ns typical propagation delay at 5 V (4.3 ns max at 5.5 V). This makes the device essentially transparent to most timing budgets. When OE is LOW, the output enters a high-impedance state, allowing other devices to drive the same bus line.\n\nThe +\/-24 mA output drive at 3 V (32 mA absolute maximum) provides substantial drive capability for a tiny SC-70 package, sufficient to drive multiple CMOS loads, LED indicators, or short PCB traces. The output can also sink\/source current for active-low or active-high LED drive.\n\nThe 1.65 V to 5.5 V supply range covers all common logic voltages. Inputs tolerate voltages up to 5.5 V independently of VCC, enabling 5 V to 3.3 V voltage translation when the device is powered from 3.3 V. The output also tolerates voltages above VCC when in the 3-state condition, preventing damage when a bus is driven to a higher voltage by another device.\n\nPower-down high-impedance on all I\/O pins prevents backflow current when VCC is 0 V, critical for hot-swap and power-sequencing applications. The 2 uA typical quiescent current (10 uA max) minimizes power consumption.\n\nThe NC7SZ126 is the 3-state version of the NC7SZ125 (which has an active-low OE). Both are part of the TinyLogic UHS family, which also includes the NC7SZ126M5X (SOT-23-5) and NC7SZ126L6X (MicroPak-6) package options.","working_principle":"**CMOS Buffer with 3-State Output:** The NC7SZ126 uses a standard CMOS inverter chain (input stage + output stage) for the buffer function, with an additional enable\/disable circuit for the 3-state output. When OE is HIGH, the output stage operates as a normal push-pull CMOS driver. When OE is LOW, both the PMOS and NMOS output transistors are turned off, creating a high-impedance state.\n\n**Propagation Delay:** The 2.6 ns typical propagation delay at 5 V is achieved through optimized transistor sizing and advanced sub-micron CMOS technology. The delay increases at lower supply voltages due to reduced drive current. At 1.65 V, the typical delay is approximately 5-7 ns.\n\n**Over-Voltage Tolerance:** Input protection circuitry allows input voltages up to 5.5 V regardless of VCC. When a voltage above VCC appears on an input, the internal ESD diode to VCC is reverse-biased, preventing current flow into the VCC rail. This enables 5 V signals to be received by a 3.3 V device.\n\n**3-State Bus Operation:** Multiple NC7SZ126 devices can share a common bus line if only one device has OE HIGH at a time. The high-Z state prevents bus contention. The output in 3-state can also tolerate voltages above VCC, allowing mixed-voltage bus operation.","pin_description":"
| Pin<\/th> | Name<\/th> | Type<\/th> | Description<\/th><\/tr><\/thead> | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1<\/td> | OE<\/td> | I<\/td> | Output enable (active HIGH); HIGH = output enabled (Y follows A); LOW = output high-impedance (Z); 5.5V over-voltage tolerant; must not float; CMOS input levels<\/td><\/tr> | ||||||||||||||||||||||||||||
| 2<\/td> | A<\/td> | I<\/td> | Data input; non-inverting; 5.5V over-voltage tolerant; CMOS input levels; VIH = 0.7 VCC, VIL = 0.3 VCC at 2.3-5.5V<\/td><\/tr> | ||||||||||||||||||||||||||||
| 3<\/td> | GND<\/td> | G<\/td> | Ground; connect to PCB ground plane<\/td><\/tr> | ||||||||||||||||||||||||||||
| 4<\/td> | Y<\/td> | O<\/td> | Data output; non-inverting; 3-state; +\/-24mA drive@3V; high-Z when OE=LOW or VCC=0V; tolerates voltage above VCC in 3-state<\/td><\/tr> | ||||||||||||||||||||||||||||
| 5<\/td> | VCC<\/td> | P<\/td> | Supply voltage; 1.65V to 5.5V; bypass with 0.1uF ceramic to GND; 2uA typical ICC; 10uA max<\/td><\/tr><\/tbody><\/table>","application_scenarios":"
|