HD74HC155 Datasheet, PDF (4/7 Pages) Hitachi Semiconductor – Dual 2-to-4-line Decoders/Demultiplexers

HD74HC155
Electrical Characteristics
Item
Input voltage
Output voltage
Input current
Quiescent supply
current
Symbol
VIH
VIL
VOH
VOL
Iin
ICC
VCC (V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
6.0
6.0
Ta = 25°C
Min Typ Max
1.5 — —
3.15 — —
4.2 — —
— — 0.5
— — 1.35
— — 1.8
1.9 2.0 —
4.4 4.5 —
5.9 6.0 —
4.18 — —
5.68 — —
— 0.0 0.1
— 0.0 0.1
— 0.0 0.1
— — 0.26
— — 0.26
— — ±0.1
— — 4.0
Ta = –40 to+85°C
Min Max Unit
Test Conditions
1.5
—
V
3.15
—
4.2
—
—
0.5 V
—
1.35
—
1.8
1.9
—
V Vin = VIH or VIL IOH = –20 µA
4.4
—
5.9
—
4.13
5.63
—
—
—
IOH = –4 mA
—
IOH = –5.2 mA
0.1
V Vin = VIH or VIL IOL = 20 µA
0.1
—
0.1
—
0.33
IOL = 4 mA
—
0.33
IOL = 5.2 mA
—
±1.0 µA Vin = VCC or GND
—
40 µA Vin = VCC or GND, Iout = 0 µA
Switching Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Item
Propagation delay
time
Symbol VCC (V)
tPLH, tPHL 2.0
4.5
Ta = 25°C
Ta = –40 to +85°C
Min Typ Max Min Max Unit
Test Conditions
— — 160 —
200 ns A, B, 2C, 1G or 2G to Y
— 13 32
—
40
6.0 — — 27
—
34
tPLH, tPHL 2.0
—
— 160
—
4.5 — 15 32
—
200 ns A or B to Y
40
6.0 — — 27
—
34
tPLH, tPHL 2.0
—
— 145
—
4.5 — 14 29
—
180 ns 1C to Y
36
6.0 — — 25
—
31
Output rise/fall
tTLH, tTHL 2.0
—
—
75
—
time
4.5
—
5
15
—
95 ns
19
6.0 — — 13
—
16
Input capacitance Cin
—
—
5
10
—
10 pF
Rev.2.00, Oct 11, 2005 page 4 of 6