Philips Semiconductors
Product specification
8-bit shift register with output latches (3-State)
74F595
FEATURES
•
Low noise, now switching feedthrough current
•
Controlled output edge rates
•
High impedance PNP base inputs for reduced loading
(20µA in High and Low states)
PIN CONFIGURATION
Q1
Q2
Q3
Q4
Q5
Q6
Q7
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
Q0
DS
OE
STCP
SHCP
SHR
QS
•
8-bit serial-in, parallel-out shift register with storage
•
3-state outputs
•
Shift register has direct clear
•
Guaranteed shift frequency-DC to 100MHz
DESCRIPTION
The 74F595 contains an 8-bit serial-in, parallel-out shift register that
feeds an 8-bit D-type storage register. The storage register has
parallel 3-State outputs. Separate clocks are provided for both the
shift register and the storage register. The shift register has a direct
overriding clear, serial input and serial output pins for cascading.
Both the shift register and storage register clocks are positive
edge-triggered. If the user wishes to connect both clocks together,
the shift register state will always be one clock pulse ahead of the
storage register.
This device uses patented circuitry to control system noise and
internal ground bounce. This is done by eliminating switching
feedthrough current and controlling both Low-to-High and
High-to-Low slew rates.
TYPE
74F595
SF01096
TYPICAL f
MAX
130MHz
TYPICAL SUPPLY CURRENT
(TOTAL)
65mA
ORDERING INFORMATION
DESCRIPTION
16-pin plastic DIP
16-pin plastic SO
COMMERCIAL RANGE
V
CC
= 5V
±10%,
T
amb
= 0°C to +70°C
N74F595N
N74F595D
PKG DWG #
SOT38-4
SOT109-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
Ds
SHCP
STCP
SHR
OE
Qs
Q0–Q7
Serial data input
Shift register clock pulse input (active rising edge)
Storage register clock pulse input (active rising edge)
Shift register reset input (active Low)
Output Enable input (active Low)
Serial expansion output
Data outputs
DESCRIPTION
74F (U.L.)
HIGH/LOW
1.0/0.033
1.0/0.033
1.0/0.033
1.0/0.033
1.0/0.033
50/33
150/40
LOAD VALUE
HIGH/LOW
20µA/20µA
20µA/20µA
20µA/20µA
20µA/20µA
20µA/20µA
1.0mA/20mA
3.0mA/24mA
NOTE:
One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
1990 Apr 18
2
853–1096 99392
Philips Semiconductors
Product specification
8-bit shift register with output latches (3-State)
74F595
LOGIC SYMBOL
14
IEC/IEEE SYMBOL (IEEE/IEC)
13
12
EN3
C2
SRG8
Ds
10
11
Qs
14
R
C1/
!
1D
2D
3
15
1
13
12
11
10
OE
STCP
SHCP
SHR
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
9
2
3
15
1
2
3
4
5
6
7
4
5
V
CC
= Pin 16
GND = Pin 8
6
SF01097
2D
3
7
9
SF01098
MODE SELECT – FUNCTION TABLE
INPUTS
OE
H
H
L
H
L
H
L
H
L
SHR
H
L
L
H
H
H
H
H
H
SHCP
↑
X
X
↑
↑
↑
↑
↑
↑
STCP
↑
↑
↑
↑
↑
↑
↑
↑
↑
Dn
X
X
X
ds
ds
X
X
ds
ds
INTERNAL SHIFT
REGISTERS
O0
O0
L0
L0
Ds
Ds
O0
O0
Ds
Ds
O1–O7
O1–O7
L
L
o0–o6
o0–o6
O1–O7
O1–O7
o0–o6
o0–o6
INTERNAL STORAGE
REGISTER
Q0–Q7
Q0–Q7
Q0–Q7
Q0–Q7
Q0–Q7
Q0–Q7
o0–o7
o0–o7
o0–o7*
o0–o7*
OUTPUTS
Q0–Q7
Z
Z
Q0–Q7
Z
Q0–Q7
Z
o0–o7
Z
o0–o*
QS
Q7
L
L
o6
Shift
o6
Q7
Store
Q7
o6
Store,
Store then Shift
o6
OPERATING
MODES
No Change
Clear shift
register, hold latch
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance
dn (on)=Lower case letters indicate the state of the referenced input (or output) one setup time prior to the Low-to-High clock transition
↑
= Low-to-High clock transition
↑
= Not a Low-to-High clock transition
* = When clocking both SHCP and STCP simultaneously the Shift Register state will always be one clock pulse ahead of the Storage
Register
1990 Apr 18
3
Philips Semiconductors
Product specification
8-bit shift register with output latches (3-State)
74F595
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
V
CC
V
IN
I
IN
V
OUT
I
O
OUT
T
amb
T
stg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Qs
Current applied to output in Low output state
Q0–Q7
Operating free-air temperature range
Storage temperature range
48
0 to +70
–65 to +150
mA
°C
°C
PARAMETER
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to +V
CC
40
UNIT
V
V
mA
V
mA
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
V
CC
V
IH
V
IL
I
IK
I
O
OH
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
Qs
High-level
High level output current
Q0–Q7
Qs
I
O
OL
T
amb
Low-level
Low level output current
Q0–Q7
Operating free-air temperature range
0
24
70
mA
°C
–3
20
mA
mA
PARAMETER
MIN
4.5
2.0
0.8
–18
–1
NOM
5.0
MAX
5.5
V
V
V
mA
mA
UNIT
1990 Apr 18
5
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