HD74LS244_15 Datasheet, PDF (5/8 Pages) Renesas Technology Corp – Octal Buffers / Line Drivers / Line Receivers (non inverted three-state outputs)

HD74LS244
Electrical Characteristics
Item
Symbol min. typ.*
Input voltage
Hysteresis
V_IH
2.0
—
V_IL
—
—
V_T+ – V_T–
0.2
0.4
Output voltage
2.4
—
V_OH
2.0
—
—
—
V_OL
—
—
Off-state output current
I_OZH
I_OZL
—
—
—
—
Input current
I_IH
—
—
I_IL
—
—
I_I
—
—
Short-circuit output
current
I_OS
–40
—
Outputs
"H"
—
13
Supply Outputs
current** "L"
I_CC
—
27
All outputs
disabled
—
32
Input clamp voltage
V_IK
—
—
Notes: * V_CC = 5 V, Ta = 25°C
** I_CC is measured with all outputs open.
max.
—
0.8
—
—
—
0.4
0.5
20
–20
20
–0.2
0.1
–225
23
46
54
–1.5
Unit
V
V
V
V
V
µA
µA
mA
mA
mA
(Ta = –20 to +75 °C)
Condition
V_CC = 4.75 V
V_IL = 0.8 V, I_OH = – 3 mA V_CC = 4.75 V,
V_IL = 0.5 V, I_OH = – 15 mA ^VIH ^{= 2 V}
I_OL = 12 mA
V_CC = 4.75 V, V_IH = 2 V,
I_OL = 24 mA
V_IL = 0.8 V
V_O = 2.7 V
V_CC = 5.25 V, V_IH = 2 V,
V_O = 0.4 V
V_IL = 0.8 V
V_CC = 5.25 V, V_I = 2.7 V
V_CC = 5.25 V, V_I = 0.4 V
V_CC = 5.25 V, V_I = 7 V
V_CC = 5.25 V
mA V_CC = 5.25 V
V
V_CC = 4.75 V, I_IN = –18 mA
Switching Characteristics
(V_CC = 5 V, Ta = 25°C)
Item
Symbol
min.
typ.
max.
Unit
Condition
Propagation delay time
t_PLH
—
12
18
ns
Output enable time
t_PHL
—
t_ZL
—
12
20
18
30
ns
C_L = 45 pF, R_L = 667 Ω
t_ZH
—
15
23
ns
Output disable time
t_LZ
t_HZ
—
—
15
10
25
18
ns
ns
C_L = 5 pF, R_L = 667 Ω
Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-
0100)".
Rev.2.00, Feb.18.2005, page 3 of 5