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74HCT594 bảng dữ liệu(PDF) 2 Page - NXP Semiconductors |
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2 / 10 page December 1991 2 Philips Semiconductors Product specification 8-bit shift register with output register 74HC/HCT594 FEATURES • Synchronous serial input and output • 8-bit parallel output • Shift and storage register have independent direct clear and clocks • 100 MHz (typ.) • Output capability: – parallel outputs: bus driver – serial outputs: standard • ICC category: MSI APPLICATIONS • Serial-to parallel data conversion • Remote control holding register DESCRIPTION The 74HC/HCT594 are high-speed, Si-gate CMOS devices, and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard No. 7A. The 74HC/HCT594 contain an 8-bit, non-inverting, serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks and direct overriding clears are provided on both the shift and storage registers. A serial output (Q7’) is provided for cascading purposes. Both the shift and storage register clocks are positive-edge triggered. If the user wishes to connect both clocks together, the shift register will always be one count pulse ahead of the storage register. QUICK REFERENCE DATA GND = 0 V: Tamb = 250 C; tr = tf = 6 ns. Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW). PD = CPD × VCC2 × fi + ∑ (CL × VCC2 × fo), where: fi = input frequency in MHz; fo = output frequency in MHz; ∑ (CL × VCC2 × fo) = sum of the outputs; CL = output load capacitance in pF; VCC = supply voltage in V. 2. For HC, the condition is VI = GND to VCC; for HCT, the condition is VI = GND to VCC − 1.5 V. ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS TYPICAL UNIT HC HCT tPHL/tPLH propagation delay CL = 15 pF; VCC = 5 V SHCP to Q7’ 1315ns STCP to Qn 13 15 ns SHR to Qn 11 14 ns STR to Qn 11 14 ns fmax maximum clock frequency SHCP,STCP 100 100 MHz CI input capacitance 3.5 3.5 pF CPD power dissipation capacitance per package notes 1 and 2 84 89 pF EXTENDED TYPE NUMBER PACKAGES PINS PIN POSITION MATERIAL CODE PC74HC/HCT594P 16 DIL plastic SOT38C, P PC74HC/HCT594T 16 SO plastic SOT109A |
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Mô tả tương tự - 74HCT594 |
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