Details

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BUY SN74HC139DR https://www.utsource.net/itm/p/144090.html
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	Operating	2.0	-	6.0	V
Input Low Voltage	VIL	-	0.0	-	0.8	V
Input High Voltage	VIH	-	2.0	-	VCC	V
Output Low Voltage	VOL	IOL = 4 mA	0.0	-	0.4	V
Output High Voltage	VOH	IOH = -0.4 mA	-	-	VCC - 0.4	V
Input Leakage Current	IIL	VCC = 4.5 V to 5.5 V	-1	-	1	μA
Output Sink Current	IOL	VCC = 4.5 V to 5.5 V, VOL = 0.4 V	-	-	-25	mA
Output Source Current	IOH	VCC = 4.5 V to 5.5 V, VOH = VCC - 0.4 V	-	-	25	mA
Propagation Delay Time	tpd	VCC = 4.5 V to 5.5 V, TA = 25°C	-	10	-	ns
Power Dissipation	PD	-	-	-	100	mW

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (V_CC) is within the operating range of 2.0 V to 6.0 V.
   • Connect the ground (GND) pin to a stable reference point.

2. Input Signals:

   • Apply input signals such that the low-level input voltage (V_IL) does not exceed 0.8 V and the high-level input voltage (V_IH) is at least 2.0 V or up to V_CC.

3. Output Signals:

   • The output low voltage (V_OL) should be no more than 0.4 V when sinking 4 mA.
   • The output high voltage (V_OH) should be at least V_CC - 0.4 V when sourcing -0.4 mA.

4. Current Ratings:

   • Do not exceed the maximum output sink current (I_OL) of 25 mA or the maximum output source current (I_OH) of 25 mA.
   • Keep the input leakage current (I_IL) within ±1 μA.

5. Timing:

   • Consider the propagation delay time (t_pd) of 10 ns for typical operation at V_CC = 4.5 V to 5.5 V and T_A = 25°C.

6. Power Dissipation:

   • Ensure the total power dissipation (P_D) does not exceed 100 mW to avoid overheating.

7. Handling:

   • Handle the device with care to avoid static damage. Use proper ESD protection measures.
   • Store and use the device in a clean, dry environment to prevent contamination and corrosion.

8. Application:

   • The SN74HC139DR is a dual 1-of-4 decoder/demultiplexer. It can be used to decode binary inputs into one of four outputs or to demultiplex a single input into multiple outputs based on the control inputs.

(For reference only)