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參數(shù)資料
| 型號： | 933670070652 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 鎖存器 |
| 英文描述： | HCT SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, MO-001AE, SOT-38-1, DIP-16 |
| 文件頁數(shù)： | 11/18頁 |
| 文件大小： | 183K |
| 代理商： | 933670070652 |
1998 Jul 08
2
Philips Semiconductors
Product specication
Quad D-type ip-op with reset; positive-edge trigger
74HC/HCT175
FEATURES
Four edge-triggered D flip-flops
Output capability: standard
ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT175 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/HCT175 have four edge-triggered, D-type
flip-flops with individual D inputs and both Q and Q
outputs.
The common clock (CP) and master reset (MR) inputs load
and reset (clear) all flip-flops simultaneously.
The state of each D input, one set-up time before the
LOW-to-HIGH clock transition, is transferred to the
corresponding output (Qn) of the flip-flop.
All Qn outputs will be forced LOW independently of clock
or data inputs by a LOW voltage level on the MR input.
The device is useful for applications where both the true
and complement outputs are required and the clock and
master reset are common to all storage elements.
QUICK REFERENCE DATA
GND = 0 V; Tamb =25 °C; tr =tf = 6 ns
Notes
1. CPD is used to determine the dynamic power dissipation (PD in W):
PD =CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
∑ (CL × VCC2 × fo) = sum of 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
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
tPHL
propagation delay
CL = 15 pF; VCC =5 V
CP to Qn, Qn
17
16
ns
MR to Qn
15
19
ns
tPLH
propagation delay
CP to Qn, Qn
17
16
ns
MR to Qn
15
16
ns
fmax
maximum clock frequency
83
54
MHz
CI
input capacitance
3.5
pF
CPD
power dissipation capacitance per flip-flop notes 1 and 2
32
34
pF
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