SCEU026 February   2024 SN74AVC8T245 , SN74AVC8T245-Q1 , SN74AXC8T245 , SN74AXC8T245-Q1 , SN74LVC8T245 , SN74LVC8T245-Q1 , SN74LXC8T245 , SN74LXC8T245-Q1 , TXV0106 , TXV0106-Q1 , TXV0108 , TXV0108-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Features
    2. 2.2 Hardware Description
      1. 2.2.1 Headers
      2. 2.2.2 Bypass Capacitors
      3. 2.2.3 Pull-up and Pull-down Resistors and Capacitive Loading
      4. 2.2.4 SMA Connectors
      5. 2.2.5 Set-up and Measurements
  9. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  10. 4Additional Information
    1.     Trademarks

2.1 EVM Features

The TXV devices feature the 6-channel fixed direction option and the direction control 8-channel option. The 8-ch option allows designers to configure the direction of data flow through the use of the direction control pin. The translators are designed for push-pull IOs. The physical boards are shown in Figure 3-1.

Table 3-1 shows a generic comparison between the AXC, AVC and TXV families.

Table 2-1 TXV, AVC and AXC Comparison
ParameterTXVAVCAXC
Operating Range1.65 V to 3.6 V1.2 V to 3.6 V0.65 V to 3.6 V
Max Drive Strength per Channel12 mA12 mA12 mA
Icc Quiescent Current(8T)22 μA25 μA55 μA
Input Leakage Current1 μA1 μA1 μA
Max Data Rate(8T)500 Mbps320 Mbps380 Mbps
Tr / Tf(1.8/3.3VccAB)

at 15pF, 125MHz (typ)(1)

752 ps1.2 ns1.2 ns
tSKO (1.8/3.3,VccA/B) @15pF, 125MHz

(typ)(1)(2)

130 ps147 ps168 ps
tPD (1.8/3.3,VccA/B) @15pF 125MHz

(typ)(1)

1.9 ns2.2 ns3.0 ns
(1) Note, parameters emphasized as typical (typ) are from bench measurements with the EVM while all other parameters are from the respective 8-ch data sheets.
(2) Values have been de-skewed per the TXV0108-EVM's differences. See Table 4-1.
GUID-20240205-SS0I-G7TQ-Q4WZ-HSHQ8XPMFFV6-low.jpgFigure 2-1 TXV-EVM 6 Channel
GUID-20240205-SS0I-STCS-DFV4-QZFCBNTTRTVN-low.jpgFigure 2-2 TXV-EVM 8 Channel

The various packages which the EVM supports are listed in Table 3-2.

Table 2-2 EVM Package Options
VersionPackageDevice Populated
6-ChannelBQBTXV0106BQB
8-ChannelRGY, RHLTXV0108RGY

The TXV-EVM is not built as a single-purpose EVM. The TXV-EVM supports all devices with P2P compatibility listed in Table 3-3.

Table 2-3 Supported Devices
Supported DevicesOrder Samples
6-Channel

TXV0106

TXV0106 samples

TXV0106-Q1

TXV0106-Q1 samples

8-ChannelSN74AXC8T245SN74AXC8T245 samples
SN74AXC8T245-Q1SN74AXC8T245-Q1 samples
SN74AVC8T245SN74AVC8T245 samples
SN74AVC8T245-Q1SN74AVC8T245-Q1 samples
SN74LVC8T245SN74LVC8T245 samples
SN74LVC8T245-Q1SN74LVC8T245-Q1 samples
SN74LXC8T245SN74LXC8T245 samples
SN74LXC8T245-Q1SN74LXC8T245-Q1 samples
TXV0108TXV0108 samples
TXV0108-Q1TXV0108-Q1 samples