74ALVCHR16245GRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
74ALVCHR16245GRG4 is a 16-bit non-inverting bidirectional bus transceiver from Texas Instruments operating at 1.65 V to 3.6 V with 50 pF load capacitance. It features active bus-hold inputs and active-LOW direction/enable controls in a 48-pin TSSOP package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 48
- Lifecycle
- ACTIVE
- Datasheet
- 74ALVCHR16245GRG4 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 74ALVCHR16245GRG4?
- 16-bit non-inverting bidirectional operation with active-LOW enable controls enables seamless dual-direction bus translation between 1.8 V and 3.3 V domains
- Active bus-hold on all inputs eliminates external pull-up or pull-down resistors, reducing BOM count on wide bidirectional data buses
- 1.65 V to 3.6 V supply range supports modern low-voltage FPGA I/O banks and processor interfaces without separate level-shifting ICs
What is 74ALVCHR16245GRG4 used for?
74ALVCHR16245GRG4 is used as a 16-bit data bus interface between FPGAs and DDR memory controllers operating at 1.8 V to 3.3 V, where bidirectional signal integrity must be maintained at high clock frequencies. It also serves as a backplane bus driver in embedded computing modules where multiple processors or DSPs share a common 16-bit address or data bus with mixed supply voltages. In test-and-measurement equipment, the device buffers 16-bit parallel data paths between a logic analyzer pod and the device under test, protecting measurement circuitry from over-voltage conditions.
What are the specifications of 74ALVCHR16245GRG4?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | BIDIRECTIONAL |
| Family | ALVC/VCX/A |
| JESD-30 Code | R-PDSO-G48 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.012A |
| Number of Bits | 8 |
| Number of Functions | 16 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP48,.3,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR, 13 INCH |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 4.2ns |
| Propagation Delay (tpd) | 4.9ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 1.65V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| 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 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the 74ALVCHR16245GRG4 datasheet?
74ALVCHR16245GRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74ALVCHR16245GRG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How wide is the data path of 74ALVCHR16245GRG4, and what supply voltage range does it support for mixed-voltage bus designs?
74ALVCHR16245GRG4 provides a 16-bit bidirectional data path and operates from 1.65 V to 3.6 V. This range covers 1.8 V, 2.5 V, and 3.3 V logic families, allowing it to interface between two domains at different supply voltages without additional level-shift components.
What is the active bus-hold feature on 74ALVCHR16245GRG4, and why does it reduce BOM cost in a 16-bit bus design?
Active bus-hold holds each input at its last driven logic state when the driving source goes to high-impedance, preventing floating inputs from drawing excess current or causing glitches. This eliminates the need for 16 external pull-up or pull-down resistors on a wide bidirectional bus, saving board space and reducing BOM cost by at least 16 passive components per transceiver.
How does the 48-pin TSSOP package of 74ALVCHR16245GRG4 help achieve a dense PCB layout compared to a dual-row SOIC package?
The 48-pin TSSOP package has a 0.5 mm pin pitch and a body width of approximately 6.1 mm, compared to a wide SOIC-48 body of around 15 mm. This narrower footprint allows the transceiver to fit between FPGA and memory rows on a four-layer PCB, shortening trace lengths and reducing crosstalk on high-speed 100 MHz bus signals.
For a design replacing 74ABT245 transceivers with 74ALVCHR16245GRG4, what key electrical differences must a designer account for?
74ALVCHR16245GRG4 operates from 1.65 V to 3.6 V whereas 74ABT245 requires 4.5 V to 5.5 V, so the designer must verify the new supply rail. Output drive is also lower at 12 mA versus 64 mA for ABT, which may require load analysis on traces with 50 pF capacitance to confirm timing margins are still met at the target bus frequency.
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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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