HD74HC257 Datasheet, PDF (3/8 Pages) Hitachi Semiconductor – Quad. 2-to-1-line Data Selectors/Multiplexers(with noninverted 3-state outputs)

HD74HC257
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage range
Input / Output voltage
Input / Output diode current
Output current
V_CC, GND current
Power dissipation
Storage temperature
V_CC
V_IN, V_OUT
I_IK, I_OK
I_O
I_CC or I_GND
P_T
Tstg
–0.5 to 7.0
V
–0.5 to V_CC +0.5
V
±20
mA
±35
mA
±75
mA
500
mW
–65 to +150
°C
Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of
which may be realized at the same time.
Recommended Operating Conditions
Item
Symbol
Ratings
Supply voltage
V_CC
2 to 6
Input / Output voltage
V_IN, V_OUT
0 to V_CC
Operating temperature
Input rise / fall time^*1
Ta
–40 to 85
t_r, t_f
0 to 1000
0 to 500
0 to 400
Notes: 1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Unit
V
V
°C
ns
Conditions
V_CC = 2.0 V
V_CC = 4.5 V
V_CC = 6.0 V
Electrical Characteristics
Item
Input voltage
Output voltage
Off-state output
current
Input current
Quiescent supply
current
Symbol
V_IH
V_IL
V_OH
V_OL
I_OZ
Iin
I_CC
V_CC (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
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
— — ±0.5
— — ±0.1
— — 4.0
Ta = –40 to+85°C
Unit
Min Max
Test Conditions
1.5
—
V
3.15
—
4.2
—
—
0.5 V
—
1.35
—
1.8
1.9
—
V Vin = V_IH or V_IL I_OH = –20 µA
4.4
—
5.9
—
4.13
—
I_OH = –6 mA
5.63
—
I_OH = –7.8 mA
—
0.1
V Vin = V_IH or V_IL I_OL = 20 µA
—
0.1
—
0.1
—
0.33
I_OL = 6 mA
—
0.33
I_OL = 7.8 mA
—
±5.0 µA Vin = V_IH or V_IL,
Vout = V_CC or GND
—
±1.0 µA Vin = V_CC or GND
—
40 µA Vin = V_CC or GND, Iout = 0 µA
Rev.2.00 Jan 31, 2006 page 3 of 7