74ABT821N Philips Semiconductors, 74ABT821N Datasheet

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74ABT821N

Manufacturer Part Number
74ABT821N
Description
10-bit D-type flip-flop; positive-edge trigger 3-State
Manufacturer
Philips Semiconductors
Datasheet

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Part Number:
74ABT821N
Manufacturer:
PHILIPS
Quantity:
376
FEATURES
DESCRIPTION
The 74ABT821 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The 74ABT821 Bus interface Register is designed to eliminate the
extra packages required to buffer existing registers and provide
QUICK REFERENCE DATA
ORDERING INFORMATION
PIN CONFIGURATION
Philips Semiconductors
24-Pin Plastic DIP
24-Pin plastic SO
24-Pin Plastic SSOP Type II
24-Pin Plastic TSSOP Type I
1995 Sep 06
High speed parallel registers with positive edge-triggered D-type
flip-flops
Ideal where high speed, light loading, or increased fan-in are
required with MOS microprocessors
Output capability: +64mA/–32mA
Latch-up protection exceeds 500mA per Jedec Std 17
ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
Power-up 3-State
Power-up Reset
10-bit D-type flip-flop; positive-edge trigger
(3-State)
SYMBOL
C
I
t
t
C
PLH
PHL
CCZ
OUT
IN
PACKAGES
GND
Propagation delay
CP to Qn
Input capacitance
Output capacitance
Total supply current
OE
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
10
11
12
1
2
3
4
5
6
7
8
9
TOP VIEW
PARAMETER
TEMPERATURE RANGE
24
23
22
21
20
19
18
17
16
15
14
13
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
V
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
CP
CC
SA00223
C
V
Outputs disabled; V
Outputs disabled; V
I
L
= 0V or V
= 50pF; V
OUTSIDE NORTH AMERICA
1
extra data width for wider data/address paths of buses carrying
parity.
The 74ABT821 is a buffered 10-bit wide version of the
74ABT374/74ABT534 functions.
The 74ABT821 is a 10-bit, edge triggered register coupled to ten
3-State output buffers. The two sections of the device are controlled
independently by the clock (CP) and Output Enable (OE) control
gates.
The register is fully edge triggered. The state of each D input, one
set-up time before the Low-to-High clock transition is transferred to
the corresponding flip-flop’s Q output.
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 ten 3-State buffers
independent of the register operation. When OE is Low, the data in
the register appears at the outputs. When OE is High, the outputs
are in high impedance ”off” state, which means they will neither drive
nor load the bus.
PIN DESCRIPTION
T
74ABT821 PW
74ABT821 DB
CC
74ABT821 N
74ABT821 D
23, 22, 21, 20, 19,
18, 17, 16, 15, 14
amb
CC
PIN NUMBER
7, 8, 9, 10, 11
2, 3, 4, 5, 6,
CONDITIONS
= 5V
= 25 C; GND = 0V
O
CC
13
10
20
1
= 0V or V
=5.5V
CC
SYMBOL
Q0-Q9
D0-D9
NORTH AMERICA
74ABT821PW DH
GND
V
OE
CP
74ABT821 DB
CC
74ABT821 N
74ABT821 D
Output enable input
(active-Low)
Data inputs
Data outputs
Clock pulse input (active
rising edge)
Ground (0V)
Positive supply voltage
TYPICAL
500
4.6
4
7
Product specification
74ABT821
FUNCTION
DWG NUMBER
853-1616 15703
SOT222-1
SOT137-1
SOT340-1
SOT355-1
UNIT
pF
pF
nA
ns

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74ABT821N Summary of contents

Page 1

... Philips Semiconductors 10-bit D-type flip-flop; positive-edge trigger (3-State) FEATURES High speed parallel registers with positive edge-triggered D-type flip-flops Ideal where high speed, light loading, or increased fan-in are required with MOS microprocessors Output capability: +64mA/–32mA Latch-up protection exceeds 500mA per Jedec Std 17 ...

Page 2

... Philips Semiconductors 10-bit D-type flip-flop; positive-edge trigger (3-State) LOGIC SYMBOL FUNCTION TABLE INPUTS INTERNAL REGISTER ...

Page 3

... Philips Semiconductors 10-bit D-type flip-flop; positive-edge trigger (3-State ABSOLUTE MAXIMUM RATINGS SYMBOL PARAMETER V DC supply voltage input diode current input voltage output diode current output voltage OUT I DC output current OUT T Storage temperature range ...

Page 4

... Philips Semiconductors 10-bit D-type flip-flop; positive-edge trigger (3-State) DC ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER V Input clamp voltage IK V High-level output voltage OH V Low-level output voltage OL Power-up output low V RST 3 voltage I Input leakage current I I Power-off leakage current OFF Power-up/down 3-State ...

Page 5

... Philips Semiconductors 10-bit D-type flip-flop; positive-edge trigger (3-State) AC SETUP REQUIREMENTS GND = 0V 2.5ns 50pF 500 SYMBOL PARAMETER t (H) Setup time, High or Low (H) Hold time, High or Low (H) CP pulse width w t (L) High or Low ...

Page 6

... Philips Semiconductors 10-bit D-type flip-flop; positive-edge trigger (3-State) TEST CIRCUIT AND WAVEFORM OUT PULSE D.U.T. GENERATOR R T Test Circuit for 3-State Outputs SWITCH POSITION TEST SWITCH t closed PLZ t closed PZL All other open DEFINITIONS R = Load resistor; see AC CHARACTERISTICS for value. ...

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