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74HCT393D Datasheet

  • 74HCT393D

  • Dual 4-bit binary ripple counter

  • 51.00KB

  • 7頁(yè)

  • PHILIPS

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Philips Semiconductors
Product speci鏗乧ation
Dual 4-bit binary ripple counter
FEATURES
鈥?/div>
Two 4-bit binary counters with individual clocks
鈥?/div>
Divide-by any binary module up to 28 in one package
鈥?/div>
Two master resets to clear each 4-bit counter
individually
鈥?/div>
Output capability: standard
鈥?/div>
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT393 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.
74HC/HCT393
The 74HC/HCT393 are 4-bit binary ripple counters with
separate clocks (1CP and 2 CP) and master reset (1MR
and 2MR) inputs to each counter. The operation of each
half of the 鈥?93鈥?is the same as the 鈥?3鈥?except no external
clock connections are required.
The counters are triggered by a HIGH-to-LOW transition of
the clock inputs. The counter outputs are internally
connected to provide clock inputs to succeeding stages.
The outputs of the ripple counter do not change
synchronously and should not be used for high-speed
address decoding.
The master resets are active-HIGH asynchronous inputs
to each 4-bit counter identified by the 鈥?鈥?and 鈥?鈥?in the pin
description.
A HIGH level on the nMR input overrides the clock and
sets the outputs LOW.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
擄C;
t
r
= t
f
= 6 ns
TYPICAL
SYMBOL
t
PHL
/ t
PLH
PARAMETER
propagation delay
nCP to nQ
0
nQ to nQ
n+1
nMR to nQ
n
f
max
C
I
C
PD
Notes
1. C
PD
is used to determine the dynamic power dissipation (P
D
in
碌W):
P
D
= C
PD
脳
V
CC2
脳
f
i
+ 鈭?/div>
(C
L
脳
V
CC2
脳
f
o
) where:
f
i
= input frequency in MHz
f
o
= output frequency in MHz
鈭?/div>
(C
L
脳
V
CC2
脳
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
2. For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
鈭?/div>
1.5 V
ORDERING INFORMATION
See
鈥?4HC/HCT/HCU/HCMOS Logic Package Information鈥?
maximum clock frequency
input capacitance
power dissipation capacitance per counter
notes 1 and 2
CONDITIONS
HC
C
L
= 15 pF; V
CC
= 5 V
12
5
11
99
3.5
23
20
6
15
53
3.5
25
ns
ns
ns
MHz
pF
pF
HCT
UNIT
December 1990
2

74HCT393D 產(chǎn)品屬性

  • NXP

  • 計(jì)數(shù)器 IC

  • Binary Counters

  • 74HCT

  • 4

  • Asynchronous

  • Up/Down

  • 2 V to 6 V

  • - 40 C to + 125 C

  • SO-14

  • Tube

  • SMD/SMT

  • 57

  • 74HCT393D,652

74HCT393D相關(guān)型號(hào)PDF文件下載

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    Hex inverter
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