74AC11245NSRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
74AC11245NSRG4 is an octal bidirectional bus transceiver with direction control from Texas Instruments in a 24-pin SOIC package. Key specs: 8 bidirectional channels, 24 mA output sink current, AC-logic family. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- 74AC11245NSRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 74AC11245NSRG4?
- 8 bidirectional channels with direction-control pin enable flexible bus isolation and level shifting in 3.3 V and 5 V systems
- AC-logic family delivers fast propagation delays under 7 ns for high-speed data bus applications
- 24 mA output sink current per channel drives heavily loaded buses with multiple receiver inputs
What is 74AC11245NSRG4 used for?
74AC11245NSRG4 is used for bidirectional data bus buffering in microprocessor systems, memory interfaces, and backplane data paths requiring high drive strength. Its direction-control input allows the transceiver to isolate or connect the A and B buses under CPU control, making it suitable for arbitrated shared-bus architectures. The 24-pin SOIC package fits standard through-hole or SMD footprints in industrial controllers, communication equipment, and embedded computing boards.
What are the specifications of 74AC11245NSRG4?
| YTEOL | 0 |
| Additional Feature | WITH DIRECTION CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | AC |
| JESD-30 Code | R-PDSO-G24 |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.024A |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP24,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 9.5ns |
| Propagation Delay (tpd) | 9.5ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the 74AC11245NSRG4 datasheet?
74AC11245NSRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74AC11245NSRG4?
Compatible alternatives and drop-in replacements for 74AC11245NSRG4:
Frequently Asked Questions
How many bidirectional data channels does 74AC11245NSRG4 provide and what bus width does that support?
74AC11245NSRG4 provides 8 bidirectional channels, directly supporting an 8-bit (byte-wide) data bus in a single IC. For 16-bit or 32-bit buses, 2 or 4 devices can be used in parallel, with all direction-control inputs tied together so the entire multi-byte bus switches direction simultaneously under a single CPU control signal.
What output drive current does 74AC11245NSRG4 deliver and how many TTL inputs can it fan out to?
74AC11245NSRG4 provides 24 mA maximum output sink current per channel, which is sufficient to drive 10 or more standard CMOS or TTL inputs in parallel while maintaining valid low-level output voltage below 0.5 V. This 24 mA capability is roughly 3× the drive of a standard 74HC logic gate, making it suitable for heavily loaded backplane buses with long PCB traces.
In a shared microcontroller data bus, how does the direction-control pin of 74AC11245NSRG4 function?
The direction-control (DIR) pin selects whether data flows from A to B or B to A across all 8 channels simultaneously. When DIR is high, data propagates from A inputs to B outputs; when low, B inputs drive A outputs. This lets a CPU assert or de-assert a single GPIO to turn the transceiver from read to write mode, enabling clean arbitration of a shared 8-bit bus across 100 ns or faster read/write cycles.
How does the AC-logic family of 74AC11245NSRG4 differ from AHC or HCT alternatives for bus buffering?
The AC-logic family in 74AC11245NSRG4 targets propagation delays under 7 ns at 5 V, faster than AHC (roughly 4 ns) but with higher output drive than HCT's 4 mA sink current. Compared to 74HCT245, the AC variant's 24 mA output sink is 6× stronger, and compared to 74AHCT245 rated for 8 mA, it provides 3× more current — making 74AC11245NSRG4 the preferred choice for long PCB bus segments with multiple load devices.
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Why Buy from FindMyChip
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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