Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsSTLVD111BFR

May 2007 Rev. 8 1/19

STLVD111

Programmable low voltage

1:10 differential LVDS clock driver

Features

■ 100ps part-to part skew

■ 50ps bank skew

■ Differential design

■ Meets LVDS spec. for driver outputs and

receiver inputs

■ Reference voltage available output V

■

Low voltage V

range of 2.375V to 2.625V

■ High signalling rate capability (exceeds

622MHz)

■ Support open, short and terminated input fail-

safe (low output state)

■ Programmable drivers power off control

Description

The STLVD111 is a low skew programmable 1 to

10 differential LVDS driver, designed for clock

distribution. The select signal is fanned out to 10

identical differential outputs.

The STLVD111 is provided with a 11 bit shift

The purpose is to enable or power off each output

clock channel and to select the clock input. The

STLVD111 is specifically designed, modelled and

produced with low skew as the key goal. Optimal

design and layout serve to minimize gate to gate

skew within a device. The net result is a

dependable guaranteed low skew device.

The STLVD111 can be used for high performance

clock distribution in 2.5V systems with LVDS

levels. Designers can take advantage of the

device’s performance to distribute low skew

clocks across the backplane or the board.

TQFP32

www.st.com

Order codes

Part number

Temperature

range

Package Packaging

STLVD111BFR -40 to 85 °C TQFP32 (Tape & Reel) 2400 parts per reel

Summary of content (19 pages)

PAGE 1
STLVD111 Programmable low voltage 1:10 differential LVDS clock driver Features ■ 100ps part-to part skew ■ 50ps bank skew ■ Differential design ■ Meets LVDS spec. for driver outputs and receiver inputs ■ Reference voltage available output VBB ■ Low voltage VCC range of 2.375V to 2.
PAGE 2
STLVD111 Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Specification of control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 Programmed mode (EN=1) . . . . . . . . . . . . . . . . . . .
PAGE 3
STLVD111 Pin configuration 1 Pin configuration Figure 1.
PAGE 4
Pin configuration Table 1.
PAGE 5
STLVD111 Maximum ratings 2 Maximum ratings Table 2. Absolute maximum ratings Symbol VCC Parameter Supply voltage Value Unit -0.3 to 2.8 V VI Input voltage -0.2 to (VCC+0.2) V VO Output voltage -0.2 to (VCC+0.2) V IOSD Driver short circuit current ESD Electrostatic discharge (HBM 1.5KΩ, 100pF) Continuous >2 KV Note: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 3.
PAGE 6
Electrical characteristics STLVD111 3 Electrical characteristics Table 5. Driver electrical characteristics (TA = -40 to 85 °C, VCC = 2.5V ± 5%, unless otherwise specified Note: 1, 2) Symbol Parameter Test condition VOD Output differential voltage (Figure 4.) RL = 100 Ω ΔVOD VOD magnitude change VOS Offset voltage ΔVOS VOS magnitude change IOS Note: -40 ≤TA ≤85°C Output short circuit current Max. Unit 400 500 600 mV 30 mV 1.25 V 30 V 1.05 1.
PAGE 7
STLVD111 Electrical characteristics Driver electrical characteristics (TA = -40 to 85 °C, VCC = 2.5V ± 5%, unless otherwise specified Note: 1, 2) Table 7. Symbol Parameter Test condition VBB Output reference voltage VCC = 2.5 V ICCD Power supply current All driver enabled and loaded CIN Input capacitance VI = 0V to VCC Min. Typ. Max. Unit 1.15 1.25 1.35 V 125 160 mA Output capacitance COUT 5 pF 5 pF VIH Logic input high threshold VCC = 2.
PAGE 8
Specification of control register 4 STLVD111 Specification of control register The STLVD111 is provided with a 11 bit shift register with a Serial In and a Control Register. The purpose is to enable or power of each output clock channel and to select the clock input. The STLVD111 provides two working modality: 4.1 Programmed mode (EN=1) The shift register have a serial input to load the working configuration.
PAGE 9
STLVD111 Table 13.
PAGE 10
Diagram STLVD111 5 Diagram Figure 2.
PAGE 11
STLVD111 Figure 3. Diagram Bank skew - tsk(b) (1) 1. BANKSKEW is the magnitude of the time difference between outputs with a single driving input terminal Figure 4. Part to part skew - tsk(PP) (1) 1. PART TO PART SKEW is the magnitude of the difference in propagation delay times between any specific terminals of two devices when both devices operate with the same input signals, the same supply voltages, and the same temperature, and have identical packages and test circuits.
PAGE 12
Diagram Figure 5. STLVD111 Pulse skew - tsk(P) (1) 1. PULSE SKEW is the magnitude of the time difference between the high to low and low to high propagation delay times at an output. Figure 6.
PAGE 13
STLVD111 Figure 7. Diagram Test circuit and voltage definition for the differential output signal . Figure 8.
PAGE 14
Diagram Figure 9.
PAGE 15
STLVD111 6 Package mechanical data 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.
PAGE 16
Package mechanical data STLVD111 TQFP32 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 1.6 A1 0.05 A2 1.35 B 0.30 C 0.09 0.063 0.15 0.002 0.006 1.40 1.45 0.053 0.055 0.057 0.37 0.45 0.012 0.015 0.018 0.20 0.0035 0.0079 D 9.00 0.354 D1 7.00 0.276 D3 5.60 0.220 e 0.80 0.031 E 9.00 0.354 E1 7.00 0.276 E3 5.60 0.220 L 0.45 0.60 L1 0.75 0.018 0.024 1.00 K 0° 0.030 0.039 3.5° 7° 0° 3.
PAGE 17
STLVD111 Package mechanical data Tape & Reel TQFP32 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 9.5 9.7 0.374 0.382 Bo 9.5 9.7 0.374 0.382 Ko 2.1 2.3 0.083 0.091 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.
PAGE 18
Revision history STLVD111 7 Revision history Table 14. Revision history Date Revision 30-May-2007 8 18/19 Changes Order codes has been updated and the document has been reformatted.
PAGE 19
STLVD111 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.