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SN54HC646 Datasheet(PDF) 5 Page - Texas Instruments

Part No. SN54HC646
Description  OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

SN54HC646 Datasheet(HTML) 5 Page - Texas Instruments

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SN54HC646, SN74HC646
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCLS150B – DECEMBER 1982 – REVISED MAY 1997
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54HC646
SN74HC646
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
2
5
6
2
5
6
V
VCC = 2 V
1.5
1.5
VIH
High-level input voltage
VCC = 4.5 V
3.15
3.15
V
VCC = 6 V
4.2
4.2
VCC = 2 V
0
0.5
0
0.5
VIL
Low-level input voltage
VCC = 4.5 V
0
1.35
0
1.35
V
VCC = 6 V
0
1.8
0
1.8
VI
Input voltage
0
VCC
0
VCC
V
VO
Output voltage
0
VCC
0
VCC
V
VCC = 2 V
0
1000
0
1000
tt
Input transition (rise and fall) time
VCC = 4.5 V
0
500
0
500
ns
VCC = 6 V
0
400
0
400
TA
Operating free-air temperature
–55
125
–40
85
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54HC646
SN74HC646
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
1.9
1.998
1.9
1.9
IOH = –20 µA
4.5 V
4.4
4.499
4.4
4.4
VOH
VI = VIH or VIL
6 V
5.9
5.999
5.9
5.9
V
IOH = –6 mA
4.5 V
3.98
4.3
3.7
3.84
IOH = –7.8 mA
6 V
5.48
5.8
5.2
5.34
2 V
0.002
0.1
0.1
0.1
IOL = 20 µA
4.5 V
0.001
0.1
0.1
0.1
VOL
VI = VIH or VIL
6 V
0.001
0.1
0.1
0.1
V
IOL = 6 mA
4.5 V
0.17
0.26
0.4
0.33
IOL = 7.8 mA
6 V
0.15
0.26
0.4
0.33
II
Control
inputs
VI = VCC or 0
6 V
±0.1
±100
±1000
±1000
nA
IOZ
A or B
VO = VCC or 0
6 V
±0.01
±0.5
±10
±5
µA
ICC
VI = VCC or 0,
IO = 0
6 V
8
160
80
µA
Ci
Control
inputs
2 V to 6 V
3
10
10
10
pF
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.


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