The Allen‑Bradley 1769-IG16 module belongs to the CompactLogix I/O family. It provides sixteen TTL-compatible digital input points. You can connect devices that output 5V DC logic signals. For instance, encoders, proximity sensors, or photoelectric sensors work well with this module. Moreover, each input accepts voltage from 4.5 to 5.5V DC. The ripple voltage tolerance reaches 50 mV peak‑to‑peak.
Additionally, the 1769-IG16 offers flexible digital filtering. You can select delay times for ON‑to‑OFF and OFF‑to‑ON transitions. Available filter settings include 0 ms, 1 ms, 2 ms, 4 ms, and 8 ms. Longer delays help reject electrical noise. Shorter delays allow faster response. Therefore, you can match the filter to your specific application needs.
Key Parameters:
Number of inputs: 16 current‑sourcing TTL inputs
Input voltage range: 4.5 to 5.5V DC
ON‑state voltage: 2.0 to 5.5V DC
OFF‑state voltage: 0 to 0.8V DC (typical, 2.0‑5.5V at 4.1mA specified as OFF range in some contexts - actual OFF is below 0.8V)
Ripple voltage tolerance: 50 mV peak‑to‑peak
Input signal delay time: 8 milliseconds (fixed) plus selectable digital filter
Selectable filter delays: 0, 1, 2, 4, 8 milliseconds (ON‑to‑OFF and OFF‑to‑ON)
Backplane current draw: 120 mA at 5.1V DC
Heat dissipation: 1.6 Watts
Isolation voltage: 75V DC (reinforced insulation, tested at 1697V DC for 1 second)
Wire type: Copper, 90°C rating
Wire size: 22‑14 AWG solid
Replacement terminal block: 1769-RTBN18
Power supply distance rating: 8 modules
The 1769-IG16 measures 118 mm in height (4.65 inches), 35 mm in width (1.38 inches), and 87 mm in depth (3.43 inches). Its weight is approximately 0.25 kg (0.55 lbs). You can mount it on a DIN rail or a panel. Terminal screws require 6 lb‑in of torque.
The operating temperature range spans -40 to 85°C (-40 to 185°F). Relative humidity can reach 5% to 95% without condensation. The module resists operational shock up to 30G. Additionally, it withstands operational vibration of 5G at 10 to 500 Hz. Maximum operating altitude is 2000 meters (6561 feet) without derating.
First, ensure the system power supply is turned off. Next, mount the 1769-IG16 onto the DIN rail or panel. Connect it to the adjacent module using the bus interface. Then, wire your TTL field devices to the removable terminal block. The replacement part number for this block is 1769-RTBN18. Use copper wire between 22 and 14 AWG.
Keep wire lengths reasonable to maintain signal integrity. After wiring, insert the terminal block into the module. Finally, power up the system and verify proper operation. The 1769-IG16 communicates with the controller through the bus interface. No external power supply is necessary for the module itself.
The 1769-IG16 provides selectable input filters to handle noisy environments. You can choose different delay times for turning ON and turning OFF. For instance, select 0 ms for maximum speed. Select 8 ms for maximum noise rejection. The filter applies to all sixteen inputs.
Furthermore, the module includes a fixed 8 millisecond input signal delay. This delay combines with your selected filter setting. Therefore, total response time equals the sum of both delays. Use shorter filter times for fast‑changing signals. Use longer filter times for stable but noisy signals.
The 1769-IG16 offers specific advantages for 5V logic applications. For instance, many standard input modules accept 24V DC only. If your sensors output 5V TTL signals, you need a dedicated TTL module. The 1769-IG16 solves this problem directly.
Additionally, the wide temperature range (-40 to 85°C) suits harsh environments. The high shock and vibration ratings make it reliable on moving machinery. The selectable digital filter helps reject electrical noise from motors or drives. Therefore, you get clean, reliable input data.
This module works with CompactLogix controllers. It also fits into any 1769 Compact I/O chassis. The bus interface supplies 5V DC power to the module. No external power supply is necessary. However, remember the power supply distance rating. You cannot place this module more than 8 slots away from the system power supply. Otherwise, voltage drop may occur.
The 1769-IG16 is a current product from Allen‑Bradley. It remains in active production. Therefore, availability and support are both excellent.
1769-IG16 TTL Input Module (1 unit)
Removable terminal block (compatible with 1769-RTBN18)
Quick start user guide
Bus connector cover
Note: No certificates or warranty documents are included in the package.
We ship worldwide using FedEx, UPS, or DHL. The gross weight is 0.25 kg. Standard delivery takes 3‑7 business days. A tracking number will be provided after shipment.
1. What types of field devices can I connect to the 1769-IG16?
You can connect any device that outputs 5V DC TTL logic signals. For example, encoders, photoelectric sensors, proximity sensors, or digital counters work well with the 1769-IG16.
2. What replacement terminal block fits the 1769-IG16?
The correct replacement is part number 1769-RTBN18. This removable terminal block allows easy wiring changes without removing the module from the DIN rail.
3. How do I choose the right digital filter delay for my application?
Use shorter delays (0‑1 ms) for fast signals like encoder pulses. Use longer delays (4‑8 ms) for slow signals in noisy environments. The 1769-IG16 lets you select different delays for ON and OFF transitions independently.
4. What is the power supply distance rating for this module?
The rating is 8 modules. This means the 1769-IG16 must be installed no more than 8 slots away from the system power supply. Exceeding this limit may cause voltage drops.
5. Can I use this module with a MicroLogix 1500 controller?
Yes, the 1769-IG16 is compatible with both CompactLogix and MicroLogix 1500 controllers. It fits into any 1769 Compact I/O chassis.
| Brand Name | Allen-Bradley |
| Model No. | 1769-IG16 |
| Product Type | Input Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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