group
74HC161 Synchronous 4-Bit Binary Counter
Public Made by Adomby adom
3 interchangeable 74HC161 parts (synchronous 4-bit binary counter) from 2 manufacturer(s), 74HC family.
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74hc161-counters: class group page from component-ocean logic-ics
2 files changed
+92−69
README.md+25@@ -1,3 +1,28 @@ # 74HC161 Synchronous 4-Bit Binary Counter 3 interchangeable 74HC161 parts (synchronous 4-bit binary counter) from 1 manufacturer(s), 74HC family.++Anything on this page is the same logical part: function code **161** (Synchronous 4-Bit Binary Counter) in the **74HC** family. Pick by package and manufacturer.++## Members++| Part page | Manufacturer | Package |+|---|---|---|+| [74HC161M](https://wiki.adom.inc/ray/74hc161m) | n/a | |+| [SN74HC161DR](https://wiki.adom.inc/ray/sn74hc161dr) | Texas Instruments | |+| [SN74HC161PWR](https://wiki.adom.inc/ray/sn74hc161pwr) | Texas Instruments | |++## The 74HC family++The workhorse CMOS family. Wide supply range, full rail-to-rail outputs, CMOS input thresholds (Vih ≈ 0.7·Vcc). Sometimes marketed as MM74HC by Onsemi/Fairchild and MC74HC by Onsemi.++| | |+|---|---|+| Supply range | 2.0 to 6.0 V (typ. 5.0 V) |+| Input threshold | CMOS |+| 5 V tolerant inputs | no |+| Speed class | fast |++## Provenance++Grouped by component-ocean's logic-ics parser (`definitions/logic-ics/`), which resolves each vendor MPN to a family_id. Membership is recomputed from the published pages; it is not hand-curated.
page.json+67−69@@ -1,72 +1,70 @@ {- "schema_version": 1,- "slug": "74hc161-counters",- "type": "component",- "kind": "group",- "version": "0.1.0",- "title": "74HC161 Synchronous 4-Bit Binary Counter",- "brief": "3 interchangeable 74HC161 parts (synchronous 4-bit binary counter) from 1 manufacturer(s), 74HC family.",- "because": "CLASS group page: the shared home for every 74HC161. A designer who needs a synchronous 4-bit binary counter in the 74HC family searches for 74HC161, not for a vendor's ordering code; the 3 MPN pages below are functionally substitutable and differ only in manufacturer and package. Derived from component-ocean's logic-ics definitions.",- "hero": {- "type": "billboard",- "headline": "74HC161 Synchronous 4-Bit Binary Counter",- "subhead": "3 interchangeable parts, one logical function."+ "schema_version": 1,+ "slug": "74hc161-counters",+ "type": "component",+ "kind": "group",+ "version": "0.1.0",+ "title": "74HC161 Synchronous 4-Bit Binary Counter",+ "brief": "3 interchangeable 74HC161 parts (synchronous 4-bit binary counter) from 1 manufacturer(s), 74HC family.",+ "because": "CLASS group page: the shared home for every 74HC161. A designer who needs a synchronous 4-bit binary counter in the 74HC family searches for 74HC161, not for a vendor's ordering code; the 3 MPN pages below are functionally substitutable and differ only in manufacturer and package. Derived from component-ocean's logic-ics definitions.",+ "hero": {+ "type": "billboard",+ "headline": "74HC161 Synchronous 4-Bit Binary Counter",+ "subhead": "3 interchangeable parts, one logical function."+ },+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ },+ "tags": [+ "logic",+ "74hc",+ "counter"+ ],+ "license": "proprietary",+ "visibility": {+ "public": true+ },+ "sample_prompts": [],+ "discovery_triggers": [+ "74HC161",+ "74hc161",+ "74HC161 Synchronous 4-Bit Binary Counter"+ ],+ "discovery_pitch": "Every 74HC161 on the wiki, cross-vendor, as one substitutable class.",+ "metadata": {+ "group_tier": "class",+ "member_count": 3,+ "family_id": "74HC161",+ "logic_family": "74HC",+ "function_code": "161",+ "function_class": "Counter"+ },+ "component": {+ "mpn": "74HC161",+ "manufacturer": "",+ "package": "",+ "pin_count": null,+ "category": "Logic ICs",+ "subcategory": "Counter",+ "body_size": null,+ "parts": {},+ "distributor_links": {},+ "logic": {+ "family_id": "74HC161",+ "logic_family": "74HC",+ "function_code": "161",+ "function_class": "Counter",+ "function_name": "Synchronous 4-Bit Binary Counter" },- "tags": [- "logic",- "74hc",- "counter"- ],- "license": "proprietary",- "visibility": {- "public": true- },- "sample_prompts": [],- "discovery_triggers": [- "74HC161",- "74hc161",- "74HC161 Synchronous 4-Bit Binary Counter"- ],- "discovery_pitch": "Every 74HC161 on the wiki, cross-vendor, as one substitutable class.",- "metadata": {- "group_tier": "class",- "member_count": 3,- "family_id": "74HC161",- "logic_family": "74HC",- "function_code": "161",- "function_class": "Counter"- },- "component": {- "mpn": "74HC161",- "manufacturer": "",- "package": "",- "pin_count": null,- "category": "Logic ICs",- "subcategory": "Counter",- "body_size": null,- "parts": {},- "distributor_links": {},- "logic": {- "family_id": "74HC161",- "logic_family": "74HC",- "function_code": "161",- "function_class": "Counter",- "function_name": "Synchronous 4-Bit Binary Counter"- },- "group": {- "tier": "class",- "member_count": 3,- "members": [- "74HC161M",- "SN74HC161DR",- "SN74HC161PWR"- ]- }- },- "author": {- "name": "Ray",- "email": "[email protected]"- },- "created_at": "2026-09-11T14:32:56.861Z",- "updated_at": "2026-09-11T14:32:56.861Z"+ "group": {+ "tier": "class",+ "member_count": 3,+ "members": [+ "74HC161M",+ "SN74HC161DR",+ "SN74HC161PWR"+ ]+ }+ } }