CD4068BNSRE4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD4068BNSRE4 is an 8-input AND/NAND gate IC from Texas Instruments in the 4000B CMOS logic family, featuring a single totem-pole output, 50 pF load rating, 6.8 mA maximum sink current, and a 14-pin SOP tape-and-reel package, suitable for multi-input logic combining, enable decoding, and bus arbitration circuits.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- CD4068BNSRE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single 8-input AND/NAND gate with totem-pole output for strong drive
- 4000B CMOS family supporting supply voltages from 3 V to 18 V
- Maximum output sink current of 6.8 mA at 50 pF load capacitance
- 14-pin SOP surface-mount package available in tape-and-reel for automated assembly
- Wide operating temperature range suitable for industrial environments
- Low static power dissipation characteristic of CMOS logic
Applications
The CD4068BNSRE4 is used in digital logic systems requiring an 8-input coincidence detector, such as interrupt-enable gates that assert only when all 8 enable signals are simultaneously valid in programmable controllers and bus interfaces. Its wide 3 V to 18 V supply range also makes it suitable for mixed-voltage industrial systems and automotive sub-systems where standard 5 V TTL parts cannot operate, and its 14-pin SOP package fits neatly alongside other 4000-series CMOS ICs on densely populated control boards.
Specifications
| YTEOL | 0 |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | AND/NAND GATE |
| Max I(ol) | 0.0068A |
| Number of Functions | 1 |
| Number of Inputs | 8 |
| Output Characteristics | TOTEM-POLE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 300ns |
| Propagation Delay (tpd) | 300ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD4068BNSRE4:
Frequently Asked Questions
How does the CD4068BNSRE4's 3 V to 18 V supply range compare to 74HC logic gates for mixed-voltage industrial designs?
74HC logic typically operates from 2 V to 6 V, limiting its use to 3.3 V and 5 V rail systems, whereas the CD4068BNSRE4's 4000B CMOS family supports 3 V to 18 V, making it directly compatible with 12 V and 15 V industrial PLC supply rails without level-shifting. This wide supply tolerance also improves noise immunity at higher supply voltages because the logic switching threshold scales with VDD, giving the 8-input AND/NAND gate better immunity against capacitively coupled interference on long cable runs.
In an 8-way interrupt arbitration circuit, how does the single-output AND function of CD4068BNSRE4 simplify the gate count?
A standard 2-input AND gate requires 7 cascaded gates to AND 8 signals together, introducing 7 gate delays and occupying 7 IC packages or significant cell area. The CD4068BNSRE4 performs the same 8-input AND function in a single package with a single gate delay, reducing propagation time to the nanosecond range and shrinking the BOM from multiple devices to one 14-pin SOP, which simplifies PCB routing and lowers power consumption in the combinational logic stage.
What output current does the CD4068BNSRE4 sink and is it sufficient to directly drive an optocoupler input?
The CD4068BNSRE4 sinks up to 6.8 mA at its totem-pole output when driving a 50 pF load, which is sufficient to forward-bias many common optocoupler input LEDs that require 5 mA to 10 mA. For optocouplers needing higher input currents of 10 mA to 20 mA, a small series resistor can limit current while still allowing the gate to assert the optocoupler reliably, provided the supply voltage is set high enough—for example, 6 mA into a 1 kΩ series resistor at a 12 V supply keeps the output well within its rated sink current.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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