74VHC244TTR STMicroelectronics, 74VHC244TTR Datasheet - Page 4

• Manufacturer Part Number: 74VHC244TTR
• Description: IC BUFF/DVR TRI-ST DUAL 20TSSOP
• Manufacturer: STMicroelectronics
• Series: 74VHCr

Specifications of 74VHC244TTR

• Logic Type: Buffer/Line Driver, Non-Inverting
• Number Of Elements: 2
• Number Of Bits Per Element: 4
• Current - Output High, Low: 8mA, 8mA
• Voltage - Supply: 2 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-7134-2; 74VHC244TTR

74VHC244
Table 7: AC Electrical Characteristics (Input t
(*) Voltage range is 3.3V
(**) Voltage range is 5.0V
Note 1: Parameter guaranteed by design. t
Table 8: Capacitive Characteristics
1) C
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
4/12
Symbol
Symbol
t
t
C
t
t
t
t
t
t
OSLH
OSHL
C
PD
C
PZH
PHZ
PLH
PHL
PZL
PLZ
OUT
PD
IN
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
Propagation Delay
Time
Output Enable
Time
Output Disable
Time
Output to Output
Skew time (note 1)
Input Capacitance
Output
Capacitance
Power Dissipation
Capacitance
(note 1)
Parameter
Parameter
0.3V
0.5V
5.0
5.0
5.0
5.0
5.0
5.0
3.3
3.3
3.3
3.3
3.3
3.3
V
(V)
CC
(**)
(**)
(**)
(**)
(**)
(**)
(*)
(*)
(*)
(*)
(*)
(*)
soLH
Test Condition
Test Condition
(pF)
= |t
C
15
50
15
50
15
50
15
50
50
50
50
50
L
pLHm
- t
R
R
R
R
R
R
pLHn
L
L
L
L
L
L
= 1K
= 1K
= 1K
= 1K
= 1K
= 1K
|, t
r
soHL
= t
f
= |t
= 3ns)
Min.
Min.
pHLm
T
T
- t
A
A
pHLn
Typ.
10.3
Typ.
= 25°C
= 25°C
5.8
8.3
3.9
5.4
6.6
9.1
4.7
6.2
6.7
19
4
6
|
Max.
Max.
11.9
10.6
14.1
14.0
8.4
5.5
7.5
7.3
9.3
9.2
1.5
1.0
10
CC(opr)
Value
Value
-40 to 85°C
Min.
-40 to 85°C
Min.
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
= C
Max.
Max.
10.0
13.5
12.5
16.0
10.5
16.0
10.5
PD
6.5
8.5
8.5
1.5
1.0
10
x V
CC
-55 to 125°C
-55 to 125°C
Min.
Min.
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
x f
IN
+ I
CC
Max.
Max.
10.0
13.5
12.5
16.0
10.5
16.0
10.5
6.5
8.5
8.5
1.5
1.0
10
/8 (per circuit)
Unit
Unit
pF
pF
pF
ns
ns
ns
ns