HD74HC85 Datasheet, PDF (4/8 Pages) Hitachi Semiconductor – 4-Bit Magnitude Comparator

HD74HC85
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
Output fall time
Input capacitance
Symbol VCC (V)
tPLH, tPHL 2.0
4.5
6.0
tPLH, tPHL 2.0
4.5
6.0
tPLH, tPHL 2.0
4.5
6.0
tPLH, tPHL 2.0
4.5
6.0
tTHL
2.0
4.5
6.0
Cin
—
Ta = 25°C
Ta = –40 to +85°C
Min Typ Max Min Max Unit
Test Conditions
— — 210 —
265 ns C0 to Σ1
— 20 42
—
53
— — 36
—
45
— — 175 —
220 ns A1 or B1 to Σ1
— 20 35
—
44
— — 30
—
37
— — 125 —
155 ns C0 to C4
— 12 25
—
31
— — 21
—
26
— — 155 —
195 ns A1 or B1 to C4
— 14 31
—
39
— — 26
—
33
— — 75
—
95 ns
— 5 15
—
19
— — 13
—
16
— 5 10
—
10 pF
Rev.2.00, Oct 06, 2005 page 4 of 7