TC74AC138P

Independent Circuits: 1
Voltage Supply Source: Single Supply
Operating Temperature: -40°C ~ 85°C
Current - Output High, Low: 24mA, 24mA
Voltage - Supply: 2 V ~ 5.5 V
Circuit: 1 x 3:8
Type: Decoder
Mounting Type: Through Hole
Package / Case: 16-DIP (0.300", 7.62mm)
Packaging: Tube
Series: 74AC
Supplier Device Package: 16-DIP
Manufacturer: Toshiba


Features:

• High speed: tpd = 5.9 ns (typ.) at V_CC = 5 V
• Low power dissipation: I_CC = 8 A (max) at Ta = 25
• High noise immunity: V_NIH = V_NIL = 28% V_CC (min)
• Symmetrical output impedance: |I_OH| = I_OL = 24 mA (min)
                                                      Capability of driving 50
                                                      transmission lines.
• Balanced propagation delays: tpLH −∼ tpHL
• Wide operating voltage range: V_CC (opr) = 2 to 5.5 V
• Pin and function compatible with 74F138


Pinout




Specifications

Characteristics	Symbol	Rating	Unit
Power supply range	VCC	−0.5 to 7.0	V
DC input voltage	VIN	−0.5 to VCC + 0.5	V
DC output voltage	VOUT	−0.5 to VCC + 0.5	V
Input diode current	IIK	±20	mA
Output diode current	IOK	±50	mA
DC output current	IOUT	±50	mA
Power dissipation	PD	500 (DIP) (Note 2)/180 (SOP/TSSOP)	mW
DC VCC/ground current	ICC	±200	mA
Storage temperature	Tstg	−65 to 150

Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction.

Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges.

Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/Derating Concept and Methods) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).

Note 2: 500 mW in the range of Ta = −40 to 65. From Ta = 65 to 85 a derating factor of −10 mW/ should be applied up to 300 mW.

Description

The TC74AC138P is an advanced high speed CMOS 3-to-8 LINE DECODER fabricated with silicon gate and double-layer metal wiring C2MOS technology.

TC74AC138P achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.

When the device is enabled, 3 Binary Select inputs (A, B and C) determine which one of the outputs ( Y0 - Y7 ) will go low.

When enable input G1 is held low or either G2A or G2B is held high, decoding function is inhibited and all outputs go high.

G1, G2A , and G2B inputs are provided to ease cascade connection and for use as an address decoder for memory systems.

All TC74AC138P inputs are equipped with protection circuits against static discharge or transient excess voltage.