{"product_id":"1769-ig16-allen-bradley-compactlogix-16-point-5v-dc-ttl-input-module","title":"1769-IG16 Allen-Bradley CompactLogix 16-Point 5V DC TTL Input Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #004085;\"\u003eAllen-Bradley \/ Rockwell Automation\u003c\/strong\u003e \u003cstrong style=\"color: #004085;\"\u003e1769-IG16\u003c\/strong\u003e is a 16-channel 5V DC TTL digital input module designed for \u003cstrong style=\"color: #004085;\"\u003eCompactLogix\u003c\/strong\u003e control systems. It utilizes current-sourcing, low-to-true logic with an operating voltage range of 4.5 to 5.5 V DC. The card enables direct connection between industrial controllers and low-voltage electronic devices, semiconductor tools, and custom circuit boards without requiring intermediate signal conditioning.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter Category\u003c\/th\u003e\n\u003cth\u003eTechnical Specification Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong style=\"color: #004085;\"\u003eAllen-Bradley \/ Rockwell Automation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1769-compactlogix\"\u003e\u003cstrong style=\"color: #004085;\"\u003eCompactLogix\u003c\/strong\u003e\u003c\/a\u003e \/ 1769 Compact I\/O System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong style=\"color: #004085;\"\u003e1769-IG16\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V DC TTL Digital Input Module (Current-Sourcing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 channels (Low-to-True logic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.5 to 5.5 V DC (50 mV peak-to-peak max ripple)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOn-State Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0 to 5.5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOff-State Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0 to 5.5 V DC @ 4.1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 mA @ 5.1 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6 W thermal power dissipation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfigurable Input Delays\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 ms, 0.1 ms, 0.5 ms, 1 ms, 2 ms, 4 ms, 8 ms (ON-to-OFF and OFF-to-ON)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply Distance Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaximum 8 modules from power supply unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 V DC continuous isolation (reinforced type, 1697 V DC test for 1s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal Block Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong style=\"color: #004085;\"\u003e1769-RTBN18\u003c\/strong\u003e (18-point removable terminal block)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCopper wire rated at 90 °C, 22 to 14 AWG solid\/stranded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eSystem Architecture and TTL Logic Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #004085;\"\u003e1769-IG16\u003c\/strong\u003e interfaces directly with 5V TTL circuit outputs, embedded microcontrollers, optical switches, and specialized test instrumentation. Operating on a current-sourcing low-to-true principle, the module pulls current out of the driving device when the signal level drops. The unit must be positioned within 8 slots of a 1769 CompactLogix power supply to guarantee adequate backplane voltage stability.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation, Grounding, and Wiring Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eMount the module onto a standard 35 mm DIN rail or directly to a cabinet panel using mounting screws. Use 90 °C rated solid or stranded copper wire (22–14 AWG) connected to the \u003cstrong style=\"color: #004085;\"\u003e1769-RTBN18\u003c\/strong\u003e terminal block. Tighten terminal block screws to a maximum torque of 0.68 N·m (6 in-lb). Ensure the chassis earth ground wire is connected prior to applying backplane power.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic Capabilities and Operational Status\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFront-panel LED status indicators show real-time logic states for channels 0 through 15. Software-configurable digital input filters allow control engineers to select delay times from 0 to 8 ms to eliminate contact bounce and electromagnetic noise. Diagnostic bits in RSLogix 5000 \/ Studio 5000 monitor bus communication status and alert operators to module configuration discrepancies.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment and Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInterfacing automated semiconductor wafer handling equipment utilizing 5V TTL sensors.\u003c\/li\u003e\n\u003cli\u003eConnecting custom FPGA or microcontroller boards directly to a CompactLogix system.\u003c\/li\u003e\n\u003cli\u003eReceiving high-speed digital signals from specialized laboratory and testing devices.\u003c\/li\u003e\n\u003cli\u003eMonitoring optical interrupters and rotary encoders operating on 5V DC logic levels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn automated testing rigs, field technicians often mistake the \u003cstrong style=\"color: #004085;\"\u003e1769-IG16\u003c\/strong\u003e for standard 24V DC sourcing input modules (such as the 1769-IQ16). Connecting 24V DC signals to this card will immediately destroy the 5V TTL input buffer circuitry due to overvoltage. Always verify field sensor supply voltages before commissioning. Additionally, strictly observe the 8-module distance limit from the system power supply to prevent excessive 5.1V DC backplane voltage drop.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSelection and Purchasing Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSelect the \u003cstrong style=\"color: #004085;\"\u003e1769-IG16\u003c\/strong\u003e when your system requires native 5V DC TTL signal monitoring without using interposing relay boards or voltage level converters. If your field sensors output standard industrial 24V DC signals, select the 1769-IQ16 (sinking\/sourcing) or 1769-IV16 (sinking) modules instead. Verify that your total module count on the 1769 bus does not exceed system power supply distance limits.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCertifications, Package Contents, and 12-Month Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEach unit ships in original factory packaging complete with protective terminal covers and installation documentation. Every item purchased includes a comprehensive 12-month replacement warranty covering technical defects and functional performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping and Express Delivery Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eOrders are processed rapidly and dispatch within 24 to 48 hours following payment verification. Global priority air freight is handled via FedEx, UPS, or DHL. Tracking details are emailed automatically upon carrier collection.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the principal difference between the 1769-IG16 TTL card and standard 24V DC input cards?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 1769-IG16 operates strictly within a 4.5 to 5.5 V DC voltage window designed for 5V TTL logic levels, whereas standard cards operate at 18 to 30 V DC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What happens if 24V DC power is accidentally applied to an input channel on this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Overvoltage beyond 5.5 V DC will permanently damage the internal TTL input registers and resistor networks, requiring module replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the module restricted to an 8-module distance rating from the power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Placing the module further than 8 slots away causes voltage drops across the 5.1V DC backplane bus, leading to logic reading errors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which replacement terminal block model should be ordered for this input card?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The module uses the 1769-RTBN18 18-point removable terminal block assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How can engineers prevent electrical noise from causing false input triggers on TTL lines?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Increase the digital filter delay setting in Studio 5000 (up to 8 ms) and use shielded, twisted-pair copper wiring for field connections.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013910519990,"sku":"1769-IG16","price":154.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1769-IG16_7776508e-cfbe-4854-8f6a-3669ea5313f6.jpg?v=1786523331","url":"https:\/\/www.plcsparehub.com\/products\/1769-ig16-allen-bradley-compactlogix-16-point-5v-dc-ttl-input-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}