{"product_id":"1756-og16-allen-bradley-controllogix-16-point-ttl-output-module","title":"1756-OG16 Allen-Bradley ControlLogix 16-Point TTL Output Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1756-OG16\u003c\/strong\u003e is a specialized 16-channel transistor-transistor logic (TTL) digital output module engineered for the Allen-Bradley ControlLogix automation platform. Designed to interface directly with low-voltage logic devices, this module delivers precise 5V DC true\/low outputs across a 4.5 to 5.5 VDC operational window. Control system engineers rely on the \u003cstrong\u003e1756-OG16\u003c\/strong\u003e to achieve lightning-fast signal switching and reliable logic-level integration within high-performance industrial control environments.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Allen-Bradley \/ Rockwell Automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1756-controllogix\"\u003eControlLogix\u003c\/a\u003e Platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e \u003cstrong\u003e1756-OG16\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Digital TTL DC Output Module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Outputs:\u003c\/strong\u003e 16-Point Low\/True TTL Outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Output Voltage:\u003c\/strong\u003e 5 VDC TTL Source\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage Range:\u003c\/strong\u003e 4.5 to 5.5 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Output Current Rating:\u003c\/strong\u003e 24 mA per point; 384 mA total per module at 60 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current Draw:\u003c\/strong\u003e 210 mA at 5.1 VDC; 2 mA at 24 VDC (1.12 W total power)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 1.5 Watts maximum at 60 °C (5.2 BTU\/hr thermal dissipation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Delay Time:\u003c\/strong\u003e 450 µs (Off-to-On); 700 µs (On-to-Off) load-dependent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-State Leakage Current:\u003c\/strong\u003e 0.1 mA maximum per point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Terminal Blocks:\u003c\/strong\u003e 1756-TBNH or 1756-TBSH Removable Terminal Blocks (RTB)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation \u0026amp; Integration Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Assignment:\u003c\/strong\u003e Install the \u003cstrong\u003e1756-OG16\u003c\/strong\u003e module into any available single slot within a standard ControlLogix local chassis or distributed I\/O rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring \u0026amp; Termination:\u003c\/strong\u003e Connect field-side TTL circuits securely using compatible 1756-TBNH or 1756-TBSH terminal blocks to ensure stable signal propagation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Budgeting:\u003c\/strong\u003e Account for the module's backplane current requirements (210 mA @ 5.1V DC) when calculating total power supply loading for your ControlLogix rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Compliance:\u003c\/strong\u003e Verify that cabinet operating temperatures remain between 0 and 60 °C with relative humidity kept under 95% non-condensing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Maintenance Ease\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Response Monitoring:\u003c\/strong\u003e Leverage the module's microsecond-level switching speeds (sub-millisecond delay times) for high-frequency pulse and logic-level verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Isolation:\u003c\/strong\u003e Monitor individual channel output status via controller diagnostic tags to quickly identify load-side shorts or open circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot-Swap Capability:\u003c\/strong\u003e Utilize the Removable Terminal Block (RTB) design to replace faulty modules swiftly without disrupting field wiring or shutting down the entire panel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eController Compatibility:\u003c\/strong\u003e Fully compatible with Allen-Bradley ControlLogix central processing units and Logix Designer programming environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Certifications:\u003c\/strong\u003e Certified under CE and UL standards, featuring CISPR 11 Class A emission compliance and a T5 temperature rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged Durability:\u003c\/strong\u003e Built to withstand harsh industrial conditions with a 30G operational shock rating and 2.0G vibration resistance (10-500 Hz).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePacking List \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacking List:\u003c\/strong\u003e One (1) \u003cstrong\u003e1756-OG16\u003c\/strong\u003e TTL Output Module, protective anti-static packaging casing, and hardware compliance documentation sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Terms:\u003c\/strong\u003e Fully backed by a comprehensive 12-month warranty covering structural integrity and operational performance from the date of purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCourier Network:\u003c\/strong\u003e Secure, expedited global shipping handled through trusted carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Window:\u003c\/strong\u003e Orders are verified, securely packed, and dispatched within 24-48 hours to minimize unexpected plant downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Application Scenes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemiconductor Fabrication:\u003c\/strong\u003e Interfacing with specialized 5V logic controllers, microprocessors, and custom TTL-driven instrumentation boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Acquisition Test Rigs:\u003c\/strong\u003e Driving high-speed digital pulse trains and triggering precision laboratory measurement hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialized OEM Machinery:\u003c\/strong\u003e Managing low-voltage digital control signals within compact, vibration-resistant automation enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Insight \u0026amp; Field Experience\u003c\/h3\u003e\n\u003cp\u003eWhen deploying 5V TTL output cards like the \u003cstrong\u003e1756-OG16\u003c\/strong\u003e, signal degradation over long wire runs is a common hurdle due to the low voltage amplitude. Based on field installation experience, our engineering team strongly recommends keeping field cable runs short (under 3 meters), using tightly twisted-pair shielded cabling, and ensuring clean ground separation from high-voltage AC lines to prevent voltage drops and false switching logic.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary difference between standard 24V DC outputs and the TTL outputs on the 1756-OG16?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-OG16 operates specifically on a 5V DC logic level designed for transistor-transistor logic devices, whereas standard cards typically switch higher 24V or 120V field voltages.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1756-OG16 drive heavy industrial actuators or solenoids directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, because each point is rated for a maximum current of 24 mA at 5V DC, this module is strictly intended for driving low-power logic inputs, LEDs, or intermediate TTL interface relays.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat terminal blocks are compatible with this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module utilizes standard Allen-Bradley Removable Terminal Blocks, specifically the 1756-TBNH or 1756-TBSH housing options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I handle maintenance replacement without disturbing cabinet wiring?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Removable Terminal Block (RTB) snaps off the front of the module, allowing you to unclip and replace the hardware chassis unit without disconnecting individual field wires.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat selection parameters are critical when sourcing a replacement TTL output card?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlways verify your control system's logic voltage requirements (5V TTL vs. 24V DC), total module current limits (384 mA max), and available backplane power slot capacity before ordering.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013810151606,"sku":"1756-OG16","price":143.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1756-OG16.jpg?v=1786521790","url":"https:\/\/www.plcsparehub.com\/products\/1756-og16-allen-bradley-controllogix-16-point-ttl-output-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}