74LX1G04STR STMicroelectronics, 74LX1G04STR Datasheet - Page 6

• Manufacturer Part Number: 74LX1G04STR
• Description: IC INVERTER LV SINGLE SOT23-5
• Manufacturer: STMicroelectronics
• Series: 74LXr

Specifications of 74LX1G04STR

• Logic Type: Inverter
• Number Of Inputs: 1
• Number Of Circuits: 1
• Current - Output High, Low: 32mA, 32mA
• Voltage - Supply: 1.65 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Output Current: 32mA
• No. Of Inputs: 1
• Supply Voltage Range: 1.65V To 5.5V
• Logic Case Style: SOT-23
• No. Of Pins: 5
• Operating Temperature Range: -55°C To +125°C
• Family Type: 74LX
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1249-2

74LX1G04
Figure 1 : RECOMMENDED SOLDERING REFLOW PROFILE FOR LEADFREE FLIP-CHIP
MOUNTING ON PCB
For Flip-Chip mounting on the PCB, STMicroelectronics recommends the use of a solder stencil aperture
of 330 x 330 µm² maximum and a typical stencil thickness of 125µm. Flip-Chips are fully compatible with
the use of near eutectic 95.5Sn 4Ag 0.5Cu solder paste with no clean flux. ST's recommendations for
Flip-Chip board mounting are illustrated on the soldering reflow profile shown in figure 1 below.
Dwell time in the soldering zone (with temperature higher than 220°C) has to be kept as short as possible
to prevent component and substrate damages. Peak temperature must not exceed 260°C. Controlled
atmosphere (N2 or N2H2) is recommended during the whole reflow, specially above 150°C.
Flip-Chips are able to withstand three times the previous recommended reflow profile in order to be
compatible with a double reflow when SMDs are mounted on both sides of the PCB plus one additional
repair. A maximum of three soldering reflows are allowed for these leadfree packages (with repair step
included). The use of a no clean flux is highly recommended to avoid any cleaning operation. In order to
prevent any bump cracks, ultrasonic cleaning methods are not recommended.
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Temperature (˚C)
Temperature (˚C)
260˚C max
260˚C max
255˚C
255˚C
125 ˚C
125 ˚C
220˚C
220˚C
180˚C
180˚C
0
0
0
0
3˚C/s max
3˚C/s max
1
1
90 to 150 sec
2
2
3
3
4
4
90 sec max
90 sec max
10-30 sec
10-30 sec
5
5
2˚C/s recommended
6
6
6˚C/s max
2˚C/s recommended
6˚C/s max
Time (min)
Time (min)
7
7