CD74HCT640E [Texas Instruments]

Name: CD74HCT640E
Brand: Texas Instruments
SKU: CD74HCT640E
Availability: InStock

Part No:

CD74HCT640E

Interface ICs

Manufacturer:

Texas Instruments

Description:

CDx4HC640 and CDx4HCT640 are inverting octal bus transceivers with 3-state outputs.

Stock Status:

Available for RFQ

Pricing:

Request Volume Pricing

Quote Response:

Within 24 Hours

Shipping:

In-stock parts ship in 1–2 business days

Specification

Type

Parameter

Input Voltage

0V ~ VCC

Output Voltage

0V ~ VCC

Junction Temperature

150°C

Operating Temperature

-55°C ~ 125°C

Storage Temperature

-65°C ~ 150°C

Absolute Max Supply Voltage

Body Size CDIP

26.92 mm × 6.92 mm

Body Size PDIP

25.4 mm × 6.35 mm

Body Size SOIC

12.80 mm × 7.50 mm

CD54HC640 Body Size

26.92 mm × 6.92 mm

CD54HC640 Input Voltage Max

VCC

CD54HC640 Input Voltage Min

CD54HC640 Operating Temperature Max

125°C

CD54HC640 Operating Temperature Min

-55°C

CD54HC640 Output Voltage Max

VCC

CD54HC640 Output Voltage Min

CD54HC640 Package

J (CDIP, 20) 26.92 mm × 6.92 mm

CD54HC640 Supply Voltage Max

CD54HC640 Supply Voltage Min

CD54HCT640 Body Size

26.92 mm × 6.92 mm

CD54HCT640 Input Voltage Max

VCC

CD54HCT640 Input Voltage Min

CD54HCT640 Operating Temperature Max

125°C

CD54HCT640 Operating Temperature Min

-55°C

CD54HCT640 Output Voltage Max

VCC

CD54HCT640 Output Voltage Min

CD54HCT640 Package

J (CDIP, 20) 26.92 mm × 6.92 mm

CD54HCT640 Supply Voltage Max

5.5V

CD54HCT640 Supply Voltage Min

4.5V

CD74HC640 Body Size

25.4 mm × 6.35 mm (PDIP), 12.80 mm × 7.50 mm (SOIC)

CD74HC640 Body Size DW

12.80 mm × 7.50 mm

CD74HC640 Body Size N

25.4 mm × 6.35 mm

CD74HC640 Package

N (PDIP, 20) 25.4 mm × 6.35 mm, DW (SOIC, 20) 12.80 mm × 7.50 mm

CD74HCT640 Body Size

25.40 mm × 6.35 mm (PDIP), 12.80 mm × 7.50 mm (SOIC)

CD74HCT640 Body Size DW

12.80 mm × 7.50 mm

CD74HCT640 Body Size N

25.4 mm × 6.35 mm

CD74HCT640 Package

N (PDIP, 20) 25.40 mm × 6.35 mm, DW (SOIC, 20) 12.80 mm × 7.50 mm

CDx4HC640 Input Capacitance

10pF

CDx4HC640 Input High Voltage Min

3.15V

CDx4HC640 Input Low Voltage Max

1.35V

CDx4HC640 Output High Voltage Min

4.4V

CDx4HC640 Output Low Voltage Max

0.1V

CDx4HC640 Power Dissipation Capacitance

38pF

CDx4HC640 Propagation Delay A To B

7 ns

CDx4HC640 Propagation Delay A To B Typ

18 ns

CDx4HC640 Propagation Delay HighZ To Level

12 ns

CDx4HC640 Supply Voltage Max

CDx4HC640 Supply Voltage Min

CDx4HC640 Three State Output Capacitance

20pF

CDx4HC640 Transition Time

12 ns

CDx4HCT640 Input Capacitance

10pF

CDx4HCT640 Input High Voltage Min

CDx4HCT640 Input Low Voltage Max

0.8V

CDx4HCT640 Output High Voltage Min

4.4V

CDx4HCT640 Output Low Voltage Max

0.1V

CDx4HCT640 Power Dissipation Capacitance

41pF

CDx4HCT640 Propagation Delay A To B

9 ns

CDx4HCT640 Propagation Delay A To B Typ

22 ns

CDx4HCT640 Propagation Delay HighZ To Level

12 ns

CDx4HCT640 Supply Voltage Max

5.5V

CDx4HCT640 Supply Voltage Min

4.5V

CDx4HCT640 Three State Output Capacitance

20pF

CDx4HCT640 Transition Time

12 ns

DW Package Thermal Resistance

58°C/W

Fanout Bus Driver

15 LSTTL loads

Fanout Standard

10 LSTTL loads

HC Power Dissipation Capacitance

38pF

HC Supply Voltage Max

HC Supply Voltage Min

HCT Power Dissipation Capacitance

41pF

HCT Supply Voltage Max

5.5V

HCT Supply Voltage Min

4.5V

Input Capacitance

10pF

Input Rise Fall Time Vcc2V

1000 ns

Input Rise Fall Time Vcc4.5V

500 ns

Input Rise Fall Time Vcc6V

400 ns

Lead Temperature

300°C

Lead Temperature SOIC

300°C

Lead Temperature Soldering SOIC

300°C

N Package Thermal Resistance

69°C/W

Noise Immunity

30% of Vcc at Vcc=5V

Output Capacitance

20pF

PDIP Thermal Resistance

69°C/W

Package Options

J (CDIP, 20), N (PDIP, 20), DW (SOIC, 20)

Power Dissipation Capacitance HC

38pF

Power Dissipation Capacitance HCT

41pF

Propagation Delay A To B HC 4.5V

18 ns (typ)

Propagation Delay A To B HCT 4.5V

22 ns (typ)

Propagation Delay A To B Typ HC

7 ns

Propagation Delay A To B Typ HCT

9 ns

RθJA PDIP

69°C/W

RθJA SOIC

58°C/W

SOIC Thermal Resistance

58°C/W

Supply Voltage Absolute

Supply Voltage Max HC

Supply Voltage Max HCT

5.5V

Supply Voltage Min HC

Supply Voltage Min HCT

4.5V

Thermal Resistance Pdip

69°C/W

Thermal Resistance Soic

58°C/W

Three State Output Capacitance

20pF

Products Detail

The CDx4HC640 and CDx4HCT640 are inverting octal bus transceivers with 3-state outputs intended for two-way asynchronous communication between data buses. They feature high drive current outputs enabling high-speed operation with large bus capacitances, combining low CMOS power dissipation with speeds comparable to low power Schottky TTL circuits. These devices can drive 15 LSTTL loads and include buffered inputs and three-state outputs. Data flow direction (A to B, B to A) is controlled by the DIR input, while outputs are enabled by a low on OE and placed in high impedance mode by a high OE.

Key Features

Buffered inputs
Three-state outputs
Fanout: Standard outputs: 10 LSTTL loads, Bus driver outputs: 15 LSTTL loads
Wide operating temperature range: -55°C to 125°C
Balanced propagation delay and transition times
Significant power reduction compared to LSTTL logic IC's
HC types: 2 V to 6 V operation, High noise immunity: N=30%, N=30% of Vcc at Vcc=5V
HCT types: 4.5 V to 5.5 V operation, Direct LSTTL input logic compatibility, VIL=0.8V(Max), VIH=2V(Min), CMOS input compatibility, I≤1µA at VOL, VOH

Application scenarios

Multiple-data-bus architecture
two-way asynchronous communication between data buses

Product FAQ

1. Is CD74HCT640E available for RFQ?

Yes. CD74HCT640E by Texas Instruments is available for RFQ. Submit your required quantity and our team will confirm real-time stock, lead time, and volume pricing.

2. Why is there no fixed price for CD74HCT640E?

Pricing for CD74HCT640E can vary by order quantity, market availability, date code, packaging, and delivery destination. Request a quote to receive the latest volume pricing.

3. What are the key specifications of CD74HCT640E?

CD74HCT640E is a Texas Instruments Interface ICs with CDx4HCT640 Propagation Delay HighZ To Level: 12 ns and CDx4HC640 Propagation Delay HighZ To Level: 12 ns. Review the product details or submit an RFQ if you need confirmation before purchase.

4. How fast can I get a quote for CD74HCT640E?

Our sales team usually responds within 24 hours after receiving your RFQ. The quote may include stock status, unit price, lead time, shipping options, and available alternatives.

5. How soon can CD74HCT640E be shipped?

If stock is confirmed, in-stock parts can usually ship within 1–2 business days. Final lead time depends on quantity, stock source, and delivery destination.

6. Can you suggest alternatives to CD74HCT640E?

Yes. If CD74HCT640E is unavailable, obsolete, or does not meet your required lead time, we can help check similar Texas Instruments Interface ICs parts or compatible alternatives.

RFQ

Part Number:

CD74HCT640E

Manufacturer:

Texas Instruments

Looking for Pricing? Contact us for volume pricing.

Shipping & Warranty

Fast Dispatch: Ships in 5-7 days(in-stock parts within 1-2 days)

Unishop Global Export: 1-7 days, $40.00

Guaranteed Delivery: Door-to-door in 30 days

Compliant Worldwide Shipping: DHL, FedEx, SF, and UPS.

Feature

30-Day Guarantee
Fasted Delivery
Hassle-Free Returns
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IMPORTANT NOTICE

Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.