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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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What are the differences among the general-purpose logic IC series?

The characteristics of each series of CMOS logic ICs are as follows:

  • Standard
    (TC40/TC45, TC4S/TC4W):

    Covers a wide operating voltage range from 3 to 18 V and guarantees electrical characteristics at three supply voltages: 5 V, 10 V, and 15 V.
  • High Speed
    (TC74HC/TC74HCT, TC7S/TC7W/TC7WT)

    Widely used with a 5-V power supply
  • Advanced
    (TC74AC/TC74ACT)

    Suitable as transmission line drivers because of high output current (24 mA)
  • Very High Speed
    (TC74VHC/74VHC/TC74VHCT/74VHCT/TC74VHCV/74VHCV, TC7SH/TC7WH/TC7PH/TC7SET)

    Combines high speed and low noise; most widely used for applications requiring high-speed operations because of the highest speed at 5 V under light-load conditions
  • CMOS Logic ICs for low-voltage systems
    (TC74VCX/ TC74LCX)

    Even at a VCC of 3.3 V, provides speed equivalent to the conventional 5.5-V high-speed series (AC/VHC series) and guarantees correct operation at 2.5 V and 1.8 V

The following table shows the major characteristics of general-purpose logic ICs.

Type

Series Name

Series
Number

One-Gate Logic Equivalent

Operating
Voltage Range
VCC (V)

Propagation Delay Time tpLH, tpHL (ns)*1

Output Current (mA)*2

Input-
Tolerant
Function

Output
Power-Down Protection

For 5-V Systems

Standard

TC40xxB
TC45xxB

TC4S
TC4W

3 to 18

200
( at 5.0V)

±0.51
(at 5.0 V)

-

-

High Speed

TC74HC

TC7S
TC7W

2 to 6

23
( at 4.5V)

±4.0 or ±6.0
(at 4.5 V)
(±2.0 in the case of TC7S)

-

-

TC74HCT

TC7WT

4.5 to 5.5

28
( at 4.5V)

Advanced

TC74AC

 

2 to 5.5

8.5
( at 4.5V)

±24
(at 4.5 V)

-

-

TC74ACT

 

4.5 to 5.5

9.0
( at 5.0V)

Very High Speed

TC74VHC
74VHC

TC7SH
TC7WH

2 to 5.5

8.5
( at 5.0V)

±8.0
(at 4.5 V)

-

TC74VHC9
74VHC9

10
( at 5.0V)

TC74VHCT
74VHCT

TC7SET

4.5 to 5.5

9.5
( at 5.0V)

*3

TC74VHCV
74VHCV

 

1.8 to 5.5

8.5
( at 5.0V)

±16
(at 4.5 V)

For low-voltage systems

Medium Speed

TC74LCX
74LCX

TC7SZ
TC7PZ
TC7WZ

1.65 to 3.6
(1.65 to 5.5 in the case of TC7SZ/PZ/WZ)

6.5
( at 3.3V)

±24
(at 3.0 V)

*4

High Speed

TC74VCX

7UL

1.2 to 3.6
(0.9 to 3.6 in the case of 7UL)

4.4
( at 3.3V)

±24
(at 3.0 V)
(±8.0 in the case of 7UL)

*1: Maximum propagation delay time of typical ICs (TC4001, TC74HC244, TC74AC244, TC74VHC244, TC74LCX244, and TC74VCX244) at-40 to 85°C, except for the TC4001 for which the maximum propagation delay time at 25°C is shown
*2: Those output current values are from the Operating Ranges table of the datasheet. Absolute maximum rated output current is specified separately.
*3: The TC7SET series and TC7SZU04/TC7WZU04 does not have an output power-down protection function.
*4: The ICs of the TC7SZ series in the fSV package and TC7SZU04/TC7WZU04 do not have an output power-down protection function except those with an open-drain output.

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