SN74ALVTH16827DLR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-voltage, 20-bit bus transceiver with 3-state outputs
• Package: 56-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels in digital systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 400MHz
• Propagation Delay: 2.5ns (max) from A to B, 2.9ns (max) from B to A
• Output Drive Strength: ±12mA
• ESD Protection: Human Body Model > 2000V, Machine Model > 200V

Detailed Pin Configuration

The SN74ALVTH16827DLR has a total of 56 pins. The pin configuration is as follows:

1. OEAB
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. A8
10. A9
11. A10
12. GND
13. B1
14. B2
15. B3
16. B4
17. B5
18. B6
19. B7
20. B8
21. B9
22. B10
23. VCCB
24. DIR
25. GND
26. Y1
27. Y2
28. Y3
29. Y4
30. Y5
31. Y6
32. Y7
33. Y8
34. Y9
35. Y10
36. VCCA
37. GND
38. A11
39. A12
40. A13
41. A14
42. A15
43. A16
44. A17
45. A18
46. A19
47. A20
48. VCCB
49. B11
50. B12
51. B13
52. B14
53. B15
54. B16
55. B17
56. B18

Functional Features

• Bidirectional voltage translation between 1.2V and 3.6V systems
• Supports both push-pull and open-drain outputs
• 3-state outputs allow multiple devices to share a common bus
• Low power consumption with Ioff feature for power saving in idle mode
• Schmitt-trigger inputs for noise immunity
• ESD protection for robustness against electrostatic discharge

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Wide supply voltage range enables compatibility with various systems - 3-state outputs facilitate bus sharing among multiple devices - Low power consumption helps conserve energy - Robust ESD protection ensures reliability in harsh environments

Disadvantages: - Limited to 20-bit bus width, may not be suitable for larger systems - Requires careful consideration of voltage levels to prevent signal distortion - Relatively large package size may limit use in space-constrained applications

Working Principles

The SN74ALVTH16827DLR is a logic level translator designed to enable communication between digital systems operating at different voltage levels. It utilizes a combination of MOSFETs and control circuitry to achieve bidirectional voltage translation.

The device has two supply voltage pins, VCCA and VCCB, which are connected to the respective systems operating at different voltage levels. The DIR pin controls the direction of data flow, allowing signals to be translated from system A to system B or vice versa.

When the DIR pin is set to logic high, the A-side inputs (A1-A20) are connected to the B-side outputs (Y1-Y10), enabling translation from system A to system B. Conversely, when the DIR pin is set to logic low, the B-side inputs (B1-B18) are connected to the A-side outputs, facilitating translation from system B to system A.

The SN74ALVTH16827DLR also features 3-state outputs, which can be disabled by asserting the OEAB pin. This allows multiple devices to share a common bus without interfering with each other's signals.

Detailed Application Field Plans

The SN74ALVTH16827DLR is commonly used in various digital systems where voltage level translation is required. Some specific application fields include:

1. Microcontrollers: Facilitating communication between microcontrollers