74LS139PC: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	V_CC		4.75		5.25	V
Output High Voltage	V_OH	I_O = -0.4 mA	2.4	2.7	3.4	V
Output Low Voltage	V_OL	I_O = 8.0 mA	0.26	0.35	0.55	V
Input High Voltage	V_IH	I_I = -0.02 mA	2.0		3.0	V
Input Low Voltage	V_IL	I_I = 0.4 mA	0.8		1.5	V
Propagation Delay Time	t_pd	V_CC = 5V, T_A = 25°C	12	18	28	ns
Power Consumption	P_D	V_CC = 5V, all outputs low	10		20	mW

Power Supply:
- Connect V_CC to +5V and GND to 0V.
- Ensure the supply voltage is within the specified range (4.75V to 5.25V) to avoid damage.
Input Signals:
- Apply logic high (2.0V to 3.0V) or logic low (0.8V to 1.5V) to the input pins.
- Ensure input signals are within the specified voltage levels to prevent incorrect operation.
Output Signals:
- The output pins can drive TTL loads directly.
- For CMOS loads, use appropriate level shifters if necessary.
- Ensure the output current does not exceed the maximum ratings (I_O = -0.4 mA for V_OH, I_O = 8.0 mA for V_OL).
Propagation Delay:
- Consider the propagation delay time (t_pd) when designing timing-sensitive circuits.
- The typical delay is 18 ns at 25°C, but it can vary between 12 ns and 28 ns.
Power Consumption:
- The power consumption is typically 10 mW but can go up to 20 mW under certain conditions.
- Ensure adequate heat dissipation if operating near the maximum power consumption.
Handling:
- Handle the IC with care to avoid static discharge.
- Store in anti-static packaging when not in use.
Pin Configuration:
- Refer to the datasheet for the specific pin configuration of the 74LS139PC.
- Ensure correct pin connections to avoid damage or incorrect operation.

(For reference only)