STLVDS31_06 STMICROELECTRONICS | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 15

Technical content

Datasheet sections

  • 1 Pin configuration
  • 2 Maximum ratings
  • 3 Electrical characteristics
  • 4 Typical characteristics
  • 5 Typical performance characteristics
  • 6 Package mechanical data
  • 7 Revision history

March 2006 Rev. 5 1/15 STLVDS31 High speed differential line drivers Feature summary I Meets or exceeds the requirements of ansi TIA/EIA-644 standard I Low voltage differential signaling with typical output voltage of 350mV and a 100Ω load I Typical output voltage rise and fall times of 750ps (400mbps) I Typical propagation delay times of 1.7ns I Operates from a single 3.3V supply I Power dissipation 25mW typical per driver at 200MHz I Driver at high impedance when disabled or with V CC = 0V I Pin compatible with the AM26LS31, SN65LVD31 I Low voltage TTL (LVTTL) logic input levels

Description

The STLVDS31 is a quad differential line drivers that implements the electrical characteristics of low voltage differential signaling (LVDS). This signaling technique lowers the output voltage levels of 5V differential standard levels (such as TIA/EIA-422B) to reduce the power, increase the switching speeds and allows operations with a 3.3V supply rail. Any of the four current mode drivers will deliver a minimum differential output voltage magnitude of 247mV into a 100Ω load when enabled. The intended application of this device and signalling technique is for point-to-point baseband data transmission over controlled impedance media approximately 100Ω . The transmission media may be printed circuit board traces, backplanes or cables. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and noise coupling to the environment. The STLVDS31 is characterized for operation from -55°C to 125°C. TSSOP Order code Part number Temperature Range Package Comments STLVDS31BTR -55 to 125 °C TSSOP16 (T ape & Reel) 2500 parts per reel

1 Pin configuration

Figure 1. Pin connections and functional diagram Table 1. Pin description

12 G Enable

8 GND Ground

16 V CC Supply voltage

Figure 2. Logic diagram and logic symbol Table 2. Truth table for receiver Table 3. Truth table

2 Maximum ratings

occur. Functional operation under these condition is not implied. Table 4. Absolute maximum ratings

  1. All voltages except differential I/O bus voltage, are with respect to the network ground terminal.

Table 5. Recommended operating conditions

3 Electrical characteristics

Table 6. Electrical characteristics

Table 7. Switching characteristics

  1. tsk(O) is the maximum delay time difference between drivers on the same device.

RS-232 IN to TTL-CMOS OUT (from 50% to 50%).

4 Typical characteristics

repetition rate (PRR) = 50Mpps, pulse width = 10 ± 0.2ns. Note B: CL includes instrumentation and fixture capacitance within 6mm of the D.U.T. Figure 3. Voltage and current definitions Figure 4. Test circuit, timing and voltage definitions for differential output signal

5 Typical performance characteristics

Figure 7. Supply Current vs Temperature Figure 8. Supply Current vs Temperature Figure 9. Propagation Delay Enable to Output Figure 10. Propagation Delay time Figure 11. Differential Output Signal

6 Package mechanical data

In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.

DIM. mm. inch A 1.2 0.047 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 e 0.65 BSC 0.0256 BSC K0 ˚ 8 ˚0 ˚ 8 ˚ TSSOP16 MECHANICAL DATA c Eb A2A D PIN 1 IDENTIFICATION LKe 0080338D

DIM. mm. inch A 330 12.992 C 12.8 13.2 0.504 0.519 D 20.2 0.795 N 60 2.362 T 22.4 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 Tape & Reel TSSOP16 MECHANICAL DATA

7 Revision history

Table 8. Revision history 28-Mar-2006 5 Order codes has been updated and new template.