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SN74LVC257ADBLE 数据表(PDF) 6 Page - Texas Instruments

部件名 SN74LVC257ADBLE
功能描述  Quadruple 2-Line to 1-Line Data Selectors
Download  30 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74LVC257ADBLE 数据表(HTML) 6 Page - Texas Instruments

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SN54LVC257A, SN74LVC257A
SCAS294O – JANUARY 1993 – REVISED JUNE 2015
www.ti.com
7.3 Recommended Operating Conditions
See
(1)
SN54LVC257A
SN74LVC257A
UNIT
MIN
MAX
MIN
MAX
Operating
2
3.6
1.65
3.6
VCC
Supply voltage
V
Data retention only
1.5
1.5
VCC = 1.65 V to 1.95 V
0.65 × VCC
VIH
High-level input voltage
VCC = 2.3 V to 2.7 V
1.7
V
VCC = 2.7 V to 3.6 V
2
2
VCC = 1.65 V to 1.95 V
0.35 × VCC
VIL
Low-level input voltage
VCC = 2.3 V to 2.7 V
0.7
V
VCC = 2.7 V to 3.6 V
0.8
0.8
VI
Input voltage
0
5.5
0
5.5
V
VO
Output voltage
0
VCC
0
VCC
V
VCC = 1.65 V
–4
VCC = 2.3 V
–8
IOH
High-level output current
mA
VCC = 2.7 V
–12
–12
VCC = 3 V
–24
–24
VCC = 1.65 V
4
VCC = 2.3 V
8
IOL
Low-level output current
mA
VCC = 2.7 V
12
12
VCC = 3 V
24
24
Δt/Δv
Input transition rise or fall rate
10
10
ns/V
TA
Operating free-air temperature
–55
125
–40
85
°C
(1)
All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, SCBA004.
7.4 Thermal Information: 16-Pin Packages
SN54LVC257A, SN74LVC257A
THERMAL METRIC(1)
D (SOIC)(2)
DB (SSOP)(2)
NS (SO)(2)
PW (TSSOP)(2)
UNIT
16 PINS
RθJA
Junction-to-ambient thermal resistance
73
82
64
108
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
(2)
The package thermal impedance is calculated in accordance with JESD 51-7.
7.5 Thermal Information: 20-Pin Package
SN54LVC257A
THERMAL METRIC(1)
RGY (LCCC)(2)
UNIT
20 PINS
RθJA
Junction-to-ambient thermal resistance
39
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
(2)
The package thermal impedance is calculated in accordance with JESD 51-5.
6
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Copyright © 1993–2015, Texas Instruments Incorporated
Product Folder Links: SN54LVC257A SN74LVC257A


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