ZHCSPP8A January 2022 – October 2022 SN74HCS245
PRODMIX
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
- RKS|20
订购信息
7 Parameter Measurement Information
Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tt < 2.5 ns.
For clock inputs, fmax is measured when the input duty cycle is 50%.
The outputs are measured one at a time with one input transition per measurement.
(1) CL includes probe
and test-fixture capacitance.
Figure 7-1 Load Circuit for 3-State
Outputs
Figure 7-3 Voltage Waveforms, Setup
and Hold Times
Figure 7-5 Voltage Waveforms
Propagation Delays
Figure 7-2 Voltage Waveforms, Pulse
Duration
(1) The
greater between tPLH and tPHL is the same as
tpd.
Figure 7-4 Voltage Waveforms
Propagation Delays
(1) The greater between
tr and tf is the same as tt.
Figure 7-6 Voltage Waveforms, Input
and Output Transition Times