SCHS189E January 1998 – October 2022 CD54HC540 , CD54HC541 , CD54HCT541 , CD74HC540 , CD74HC541 , CD74HCT540 , CD74HCT541
PRODUCTION DATA
- 1 Features
- 2 Description
- 3 Revision History
- 4 Pin Configuration and Functions
- 5 Specifications
- 6 Parameter Measurement Information
- 7 Detailed Description
- 8 Power Supply Recommendations
- 9 Layout
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
Package Options
Refer to the PDF data sheet for device specific package drawings
Mechanical Data (Package|Pins)
- N|20
- DW|20
- PW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information
6 Parameter Measurement Information
tpd is the maximum between tPLH and tPHL
tt is the maximum between tTLH and tTHL
Figure 6-1 HC Transition Times and
Propagation Delay Times, Combination Logic
Figure 6-3 HC Three-State Propagation
Delay Waveform
A. Open drain waveforms tPLZ and tPZL are the same as
those for three-state shown on the left. The test circuit is Output
RL = 1kΩ to VCC, CL = 50 pF.
Figure 6-5 HC and HCT Three-State
Propagation Delay Test Circuit
Figure 6-2 HCT Transition Times and
Propagation Delay Times, combination Logic
Figure 6-4 HCT Three-State
Propagation Delay Waveform