HD74HCT688 Datasheet, PDF (4/8 Pages) Hitachi Semiconductor – 8-bit Magnitude Comparator

HD74HCT688
DC Characteristics
Ta = 25°C
Ta = –40 to
+85°C
Test Conditions
Item
Input voltage
Symbol Min Typ Max Min
V_IH
2.0 — — 2.0
Max
—
Unit
V
V_CC (V)
4.5 to
5.5
V_IL
— — 0.8 — 0.8 V 4.5 to
5.5
Output voltage
V_OH
V_OL
Input current
Iin
Quiescent current I_CC
4.4 — — 4.4 — V 4.5
4.18 — — 4.13 —
4.5
— — 0.1 — 0.1 V 4.5
— — 0.26 — 0.33
4.5
— — ±0.1 — ±1.0 µA 5.5
— — 4.0 — 40 µA 5.5
Vin = V_IH or V_IL I_OH = –20 µA
I_OH = –4 mA
Vin = V_IH or V_IL I_OL = 20 µA
I_OL = 4 mA
Vin = V_CC or GND
Vin = V_CC or GND, Iout = 0 µA
AC Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Item
Symbol
Propagation delay t_PLH
time
t _PHL
t _PLH
t _PHL
Output rise/fall
t _TLH
time
t _THL
Input capacitance Cin
Ta = 25°C
Ta = –40 to
+85°C
Min Typ Max Min Max
— 17 42 — 53
— 19 42 — 53
— 9 24 — 30
— 12 24 — 30
— 5 15 — 19
— 5 10 — 10
Unit
ns
ns
ns
pF
Test Conditions
V_CC (V)
4.5
Por Q to output
4.5
4.5
Enable to output
4.5
4.5
—
4