Philips Semiconductors
Product specification
74ABT573A
Octal D-type transparent latch (3-State)
The 74ABT573A device is an octal transparent latch coupled to
eight 3-State output buffers. The two sections of the device are
controlled independently by Enable (E) and Output Enable (OE)
control gates. The 74ABT573A is functionally identical to the
74ABT373 but has a flow-through pinout configuration to facilitate
PC board layout and allow easy interface with microprocessors.
FEATURES
• 74ABT573A is flow-through pinout version of 74ABT373
• Inputs and outputs on opposite side of package allow easy
interface to microprocessors
• 3-State output buffers
• Common output enable
• Latch-up protection exceeds 500mA per JEDEC Std 17
• ESD protection exceeds 2000 V per MIL STD 883 Method 3015
The data on the D inputs are transferred to the latch outputs when
the Latch Enable (E) input is High. The latch remains transparent to
the data inputs while E is High, and stores the data that is present
one setup time before the High-to-Low enable transition.
and 200 V per Machine Model
• Power-up 3-State
• Power-up reset
The 3-State output buffers are designed to drive heavily loaded
3-State buses, MOS memories, or MOS microprocessors. The
active-Low Output Enable (OE) controls all eight 3-State buffers
independent of the latch operation.
DESCRIPTION
When OE is Low, the latched or transparent data appears at the
outputs. When OE is High, the outputs are in the High-impedance
”OFF” state, which means they will neither drive nor load the bus.
The 74ABT573A high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
QUICK REFERENCE DATA
SYMBOL
CONDITIONS
Tamb = 25°C; GND = 0V
PARAMETER
tPLH
tPHL
Propagation delay
Dn to Qn
CL = 50pF; VCC = 5V
CIN
TYPICAL
UNIT
2.8
3.3
ns
pF
Input capacitance
VI = 0V or VCC
3
COUT
Output capacitance
Outputs disabled; VO = 0V or VCC
6
pF
ICCZ
Total supply current
Outputs disabled; VCC =5.5V
100
µA
ORDERING INFORMATION
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
DWG NUMBER
20-Pin Plastic DIP
PACKAGES
–40°C to +85°C
74ABT573A N
74ABT573A N
SOT146-1
20-Pin plastic SO
–40°C to +85°C
74ABT573A D
74ABT573A D
SOT163-1
20-Pin Plastic SSOP Type II
–40°C to +85°C
74ABT573A DB
74ABT573A DB
SOT339-1
20-Pin Plastic TSSOP Type I
–40°C to +85°C
74ABT573A PW
74ABT573APW DH
SOT360-1
PIN CONFIGURATION
PIN DESCRIPTION
PIN
NUMBER
SYMBOL
FUNCTION
1
OE
2, 3, 4, 5,
6, 7, 8, 9
D0-D7
Data inputs
Q0-Q7
Data outputs
17 Q2
19, 18, 17,
16, 15, 14,
13, 12
5
16 Q3
11
E
6
15 Q4
10
GND
Ground (0V)
D5
7
14 Q5
20
VCC
Positive supply voltage
D6
8
13 Q6
D7
9
12 Q7
OE
1
20 VCC
D0
2
19 Q0
D1
3
18 Q1
D2
4
D3
D4
GND 10
Output enable input (active-Low)
Enable input (active-High)
11 E
SA00185
1995 Sep 06
1
853–1455 15703
Philips Semiconductors
Product specification
Octal D-type transparent latch (3-State)
LOGIC SYMBOL (IEEE/IEC)
74ABT573A
LOGIC SYMBOL
1
EN
11
C1
2
2D
19
1
3
18
4
17
5
16
6
15
7
14
8
13
9
12
11
2
3
D0
D1
4
5
D2 D3
6
7
8
9
D4
D5
D6
D7
E
1
OE
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
19
18
17
16
15
14
13
12
SA00187
SA00186
FUNCTION TABLE
INTERNAL
OUTPUTS
OE
INPUTS
E
Dn
REGISTER
Q0 – Q7
L
L
H
H
L
H
L
H
L
H
Enable and read register
L
L
↓
↓
l
h
L
H
L
H
Latch and read register
L
L
X
NC
NC
H
H
L
H
X
Dn
NC
Dn
Z
Z
H =
h =
L =
l =
NC=
X =
Z =
↓ =
OPERATING MODE
Hold
Disable outputs
High voltage level
High voltage level one set-up time prior to the High-to-Low E transition
Low voltage level
Low voltage level one set-up time prior to the High-to-Low E transition
No change
Don’t care
High impedance “off” state
High-to-Low E transition
LOGIC DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
2
3
4
5
6
7
8
9
D
E
D
Q
E
D
Q
E
D
Q
E
D
Q
E
D
Q
E
D
Q
E
D
Q
E
Q
11
E
1
OE
19
Q0
18
Q1
17
16
Q2
Q3
15
Q4
14
Q5
13
Q6
12
Q7
SA00188
1995 Sep 06
2
Philips Semiconductors
Product specification
Octal D-type transparent latch (3-State)
74ABT573A
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL
VCC
IIK
PARAMETER
CONDITIONS
RATING
UNIT
–0.5 to +7.0
V
–18
mA
–1.2 to +7.0
V
VO < 0
–50
mA
output in Off or High state
–0.5 to +5.5
V
output in Low state
128
mA
–65 to 150
°C
DC supply voltage
DC input diode current
VI < 0
voltage3
VI
DC input
IOK
DC output diode current
voltage3
VOUT
DC output
IOUT
DC output current
Tstg
Storage temperature range
NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
RECOMMENDED OPERATING CONDITIONS
SYMBOL
VCC
PARAMETER
LIMITS
DC supply voltage
UNIT
Min
Max
4.5
5.5
V
0
VCC
V
VI
Input voltage
VIH
High-level input voltage
VIL
Low-level input voltage
0.8
V
IOH
High-level output current
–32
mA
IOL
Low-level output current
64
mA
0
5
ns/V
–40
+85
°C
∆t/∆v
Input transition rise or fall rate
Tamb
Operating free-air temperature range
1995 Sep 06
2.0
3
V
Philips Semiconductors
Product specification
Octal D-type transparent latch (3-State)
74ABT573A
DC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Min
VIK
VOH
Input clamp voltage
High-level output voltage
Tamb = –40°C
to +85°C
Tamb = +25°C
VCC = 4.5V; IIK = –18mA
Typ
Max
–0.9
–1.2
Min
UNIT
Max
–1.2
V
VCC = 4.5V; IOH = –3mA; VI = VIL or VIH
2.5
2.9
2.5
V
VCC = 5.0V; IOH = –3mA; VI = VIL or VIH
3.0
3.4
3.0
V
VCC = 4.5V; IOH = –32mA; VI = VIL or VIH
2.0
2.4
2.0
V
VOL
Low-level output voltage
VCC = 4.5V; IOL = 64mA; VI = VIL or VIH
0.42
0.55
0.55
V
VRST
Power-up output low
voltage3
VCC = 5.5V; IO = 1mA; VI = GND or VCC
0.13
0.55
0.55
V
II
Input leakage current
VCC = 5.5V; VI = GND or 5.5V
±0.01
±1.0
±1.0
µA
Power-off leakage current
VCC = 0.0V; VO or VI ≤ 4.5V
±5.0
±100
±100
µA
Power-up/down 3-State
output current4
VCC = 2.0V; VO = 0.5V; VOE = Don’t Care;
VI = GND or VCC
±5.0
±50
±50
µA
IOZH
3-State output High current
VCC = 5.5V; VO = 2.7V; VI = VIL or VIH
5.0
50
50
µA
IOZL
3-State output Low current
VCC = 5.5V; VO = 0.5V; VI = VIL or VIH
–5.0
–50
–50
µA
ICEX
Output High leakage current
VCC = 5.5V; VO = 5.5V; VI = GND or VCC
5.0
50
50
µA
–180
mA
IOFF
IPU/IPD
IO
Output
current1
ICCH
ICCL
Quiescent supply current
ICCZ
∆ICC
Additional supply current per
input pin2
VCC = 5.5V; VO = 2.5V
–40
–180
–40
VCC = 5.5V; Outputs High, VI = GND or VCC
100
250
250
µA
VCC = 5.5V; Outputs Low, VI = GND or VCC
24
30
30
mA
VCC = 5.5V; Outputs 3-State;
VI = GND or VCC
100
250
250
µA
VCC = 5.5V; one input at 3.4V,
other inputs at VCC or GND
0.5
1.5
1.5
mA
NOTES:
1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
2. This is the increase in supply current for each input at 3.4V.
3. For valid test results, data must not be loaded into the flip-flops (or latches) after applying the power.
4. This parameter is valid for any VCC between 0V and 2.1V with a transition time of up to 10msec. For VCC = 2.1V to VCC = 5V 10%, a
transition time of up to 100µsec is permitted.
AC CHARACTERISTICS
GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω
LIMITS
SYMBOL
PARAMETER
Tamb = -40 to
+85oC
VCC = +5.0V ±0.5V
Tamb = +25oC
VCC = +5.0V
WAVEFORM
Min
Typ
Max
Min
Max
UNIT
tPLH
tPHL
Propagation delay
Dn to Qn
2
1.5
2.2
2.8
3.3
4.0
4.8
1.5
2.2
4.5
5.3
ns
tPLH
tPHL
Propagation delay
E to Qn
1
1.2
1.8
2.5
3.0
4.0
4.4
1.2
1.8
4.5
4.7
ns
tPZH
tPZL
Output enable time
to High and Low level
4
5
1.2
2.7
3.0
3.8
4.5
5.3
1.2
2.7
5.2
5.7
ns
tPHZ
tPLZ
Output disable time
from High and Low level
4
5
1.5
1.2
2.8
2.2
4.1
3.4
1.5
1.2
4.5
3.8
ns
1995 Sep 06
4
Philips Semiconductors
Product specification
Octal D-type transparent latch (3-State)
74ABT573A
AC SETUP REQUIREMENTS
GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω
LIMITS
SYMBOL
PARAMETER
Tamb = +25oC
VCC = +5.0V
WAVEFORM
Tamb = -40 to +85oC
VCC = +5.0V ±0.5V
UNIT
Min
Typ
Min
3
1.0
1.0
0.3
0.2
1.0
1.0
ns
Hold time, High or Low
Dn to E
3
1.0
1.0
–0.1
–0.2
1.0
1.0
ns
E pulse width
High
1
2.0
0.7
2.0
ns
ts(H)
ts(L)
Setup time, High or Low
Dn to E
th(H)
th(L)
tw(H)
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
VM
E
VM
VM
tw(H)
tPHL
OE
VM
VM
tPZH
tPHZ
tPLH
VM
Qn
Qn
VM
VOH–0.3V
VM
0V
SA00063
SA00066
Waveform 1. Propagation Delay, Enable to Output, and Enable
Pulse Width
Dn
VM
Waveform 4. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
OE
VM
tPLH
Qn
VM
VM
tPZL
tPHL
VM
VM
Qn
tPLZ
VM
VOL+0.3V
VOL
SA00064
SA00332
Waveform 2. Propagation Delay for Data to Outputs
Dn
Waveform 5. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
ÉÉÉ
ÉÉÉÉÉÉÉÉ
ÉÉÉ
ÉÉÉ ÉÉÉÉÉÉÉÉ
ÉÉÉ
ÉÉÉ ÉÉÉÉÉÉÉÉ
ÉÉÉ
VM
VM
ts(H)
E
VM
th(H)
VM
VM
ts(L)
th(L)
VM
NOTE: The shaded areas indicate when the input is permitted
to change for predictable output performance.
SA00065
Waveform 3. Data Setup and Hold Times
1995 Sep 06
5
Philips Semiconductors
Product specification
Octal D-type transparent latch (3-State)
74ABT573A
TEST CIRCUIT AND WAVEFORM
VCC
7.0V
PULSE
GENERATOR
VIN
tW
90%
VOUT
VM
NEGATIVE
PULSE
CL
10%
0V
RL
tTHL (tF)
tTLH (tR)
tTLH (tR)
tTHL (tF)
90%
POSITIVE
PULSE
Test Circuit for 3-State Outputs
AMP (V)
90%
VM
VM
10%
10%
tW
SWITCH POSITION
TEST
SWITCH
tPLZ
closed
tPZL
closed
All other
open
AMP (V)
VM
10%
RL
D.U.T.
RT
90%
0V
VM = 1.5V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
DEFINITIONS
FAMILY
RL = Load resistor; see AC CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
74ABT
Amplitude
Rep. Rate
tW
tR
tF
3.0V
1MHz
500ns
2.5ns
2.5ns
SA00012
1995 Sep 06
6
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