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80021012A View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
80021012A OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS TI
Texas Instruments TI
80021012A Datasheet PDF : 18 Pages
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SN54LS245, SN74LS245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SDLS146A OCTOBER 1976 REVISED FEBRUARY 2002
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIH High-level input voltage
VIL Low-level input voltage
VIK Input clamp voltage
Hysteresis (VT+ VT) A or B
VOH High-level output voltage
VOL Low-level output voltage
IOZH
Off-state output current,
high-level voltage applied
TEST CONDITIONS
VCC = MIN,
VCC = MIN
VCC = MIN,
VIH = 2 V,
VIL = VIL(max)
VCC = MIN,
VIH = 2 V,
VIL = VIL(max)
VCC = MAX,
OE at 2 V
II = 18 mA
IOH = 3 mA
IOH = MAX
IOL = 12 mA
IOL = 24 mA
VO = 2.7 V
SN54LS245
MIN TYPMAX
2
0.7
1.5
0.2 0.4
2.4 3.4
2
0.4
SN74LS245
MIN TYPMAX
2
0.8
1.5
0.2 0.4
2.4 3.4
2
0.4
0.5
20
20
Off-state output current,
IOZL low-level voltage applied
VCC = MAX,
OE at 2 V
VO = 0.4 V
200
200
Input current at A or B
II
maximum input
voltage
DIR or OE
VCC = MAX
VI = 5.5 V
VI = 7 V
0.1
0.1
0.1
0.1
IIH High-level input current
VCC = MAX,
IIL Low-level input current
IOS Short-circuit output current§
VCC = MAX,
VCC = MAX
Total, outputs high
VIH = 2.7 V
VIL = 0.4 V
20
20
0.2
0.2
40
225 40
225
48 70
48 70
ICC Supply current Total, outputs low VCC = MAX
Outputs open
62 90
62 90
Outputs at high Z
64 95
64 95
For conditions shown as MIN or MAX, use the appropriate values specified under recommended operating conditions.
All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.
UNIT
V
V
V
V
V
V
µA
µA
mA
µA
mA
mA
mA
switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1)
PARAMETER
TEST CONDITIONS
tPLH
tPHL
tPZL
tPZH
tPLZ
tPHZ
Propagation delay time, low- to high-level output
Propagation delay time, high- to low-level output
Output enable time to low level
Output enable time to high level
Output disable time from low level
Output disable time from high level
CL = 45 pF,
CL = 45 pF,
CL = 5 pF,
RL = 667 W
RL = 667 W
RL = 667 W
MIN TYP MAX UNIT
8
12
ns
8
12
27
40
ns
25
40
15
25
ns
15
28
4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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