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HD74HC77
4-bit Bistable Latch
REJ03D0552-0200 (Previous ADE-205-424) Rev.2.00 Oct 06, 2005
Description
The HD74HC77 is ideally suited for use as temporary storage for binary information between processing units and input/output or indicator units. Information present at a data (D) input is transferred to the Q output when the enable (G) is high and the Q output will follow the data input as long as the enable remains high. When the enable goes low the information (that was present at the data input at the time the transition occurred) is retained at the Q output until the enable is permitted to go high.
Features
* * * * * * High Speed Operation: tpd (D to Q) = 12 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 A max Low Quiescent Supply Current: ICC (static) = 2 A max (Ta = 25C) Ordering Information
Part Name HD74HC77P HD74HC77FPEL HD74HC77RPEL Package Type DILP-14 pin SOP-14 pin (JEITA) SOP-14 pin (JEDEC) Package Code (Previous Code) PRDP0014AB-B (DP-14AV) PRSP0014DF-B (FP-14DAV) PRSP0014DE-A (FP-14DNV) Package Abbreviation P FP RP -- EL (2,000 pcs/reel) EL (2,500 pcs/reel) Taping Abbreviation (Quantity)
Note: Please consult the sales office for the above package availability.
Function Table
Inputs Data L H X H: L: X: High level Low level Irrelevant Enable G H H L Output Q L H No change
Rev.2.00, Oct 06, 2005 page 1 of 6
HD74HC77
Pin Arrangement
1D 1 2D 2 Enable3-4 3 VCC 4 3D 5 4D 6 NC 7 D D Q G G Q D D Q G G Q
14 1Q 13 2Q 12 Enable1-2 11 GND 10 NC 9 3Q 8 4Q
(Top view)
Logic Diagram (1/4)
Data
Q
Enable
Absolute Maximum Ratings
Item Supply voltage range Input / Output voltage Input / Output diode current Output current VCC, GND current Power dissipation Storage temperature Symbol VCC Vin, Vout IIK, IOK IO ICC or IGND PT Tstg Ratings -0.5 to 7.0 -0.5 to VCC +0.5 20 25 50 500 -65 to +150 Unit V V mA mA mA mW C
Note: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.
Rev.2.00, Oct 06, 2005 page 2 of 6
HD74HC77
Recommended Operating Conditions
Item Supply voltage Input / Output voltage Operating temperature Input rise / fall time Note:
*1
Symbol VCC VIN, VOUT Ta tr , tf
Ratings 2 to 6 0 to VCC -40 to 85 0 to 1000 0 to 500 0 to 400
Unit V V C
Conditions
VCC = 2.0 V ns VCC = 4.5 V VCC = 6.0 V
1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics.
Electrical Characteristics
Ta = 25C Item Input voltage Symbol VCC (V) VIH 2.0 4.5 6.0 VIL 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 VOL 2.0 4.5 6.0 4.5 Input current Quiescent supply current Iin ICC 6.0 6.0 6.0 Min 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.18 5.68 -- -- -- -- -- -- -- Typ -- -- -- -- -- -- 2.0 4.5 6.0 -- -- 0.0 0.0 0.0 -- -- -- -- Max -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.26 0.26 0.1 2.0 Ta = -40 to+85C Min 1.5 3.15 4.2 -- -- -- 1.9 4.4 5.9 4.13 5.63 -- -- -- -- -- -- -- Max -- -- -- 0.5 1.35 1.8 -- -- -- -- -- 0.1 0.1 0.1 0.33 0.33 1.0 20 V IOH = -4 mA IOH = -5.2 mA Vin = VIH or VIL IOL = 20 A V Unit V Test Conditions
Output voltage
VOH
V
Vin = VIH or VIL IOH = -20 A
IOL = 4 mA IOL = 5.2 mA A Vin = VCC or GND A Vin = VCC or GND, Iout = 0 A
Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Item Propagation delay time Symbol VCC (V) tPLH, tPHL 2.0 4.5 6.0 2.0 4.5 6.0 Hold time th 2.0 4.5 6.0 2.0 4.5 6.0 Cin -- Min -- -- -- -- -- -- 5 5 5 -- -- -- -- Ta = 25C Ta = -40 to +85C Unit Typ Max Min Max -- 12 -- -- 13 -- -- 1 -- -- 5 -- 5 105 21 18 100 20 17 -- -- -- 75 15 13 10 -- -- -- -- -- -- 5 5 5 -- -- -- -- 130 26 22 125 25 21 -- -- -- 95 19 16 10 pF ns ns Test Conditions Data to Q
ns
G to Q
Output rise/fall time Input capacitance
tTLH, tTHL
ns
Rev.2.00, Oct 06, 2005 page 3 of 6
HD74HC77
Test Circuit
VCC VCC
Output
See Function Table
Input Pulse generator Zout = 50 Input Pulse generator Zout = 50
Enable
Q CL = 50 pF Output
Data
Q CL = 50 pF
Note: C L includes the probe and jig capacitance.
Waveforms
* Waveform - 1
tr tw D
10 % 90 % 50 % 90 % 50 % 10 % 50 %
tf tw VCC 0V t su th
t su tr Latch Enable
90 % 90 % 50 % 50 % 10 % 10 %
th tf
VCC
50 % 50 %
tw t PLH t PLH
90 %
tw
t PHL t PHL
90 % 50 % 10 %
0V
VOH VOL
Q
50 % 10 %
t TLH
t THL
Note: 1. Input waveform: PRR 1 MHz, Zo = 50 , tr 6 ns, tf 6 ns
Rev.2.00, Oct 06, 2005 page 4 of 6
HD74HC77
Package Dimensions
JEITA Package Code P-DIP14-6.3x19.2-2.54 RENESAS Code PRDP0014AB-B Previous Code DP-14AV MASS[Typ.] 0.97g
D
14
8
1 b3
7
Z
E
Reference Symbol
Dimension in Millimeters Min Nom 7.62 19.2 6.3 20.32 7.4 5.06 0.51 0.40 0.48 1.30 0.19 0 2.29 2.54 0.25 0.31 15 2.79 2.39 2.54 0.56 Max
A
A1
e1 D E
L
A A1 bp
e
bp
e1
c
b3 c
e Z
( Ni/Pd/Au plating )
L
JEITA Package Code P-SOP14-3.95x8.65-1.27
RENESAS Code PRSP0014DE-A
Previous Code FP-14DNV
MASS[Typ.] 0.13g
*1
D 8
F
14
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
bp
*2
Index mark
HE
E
c
Reference Symbol
Dimension in Millimeters Min Nom 8.65 3.95 Max 9.05
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
D E A2
7 bp x M L1
A1 A bp b1 c c1
0.10
0.14
0.25 1.75
0.34
0.40
0.46
0.15
0.20
0.25
A
HE
0 5.80 6.10 1.27
8 6.20
A1
L
e x y
0.25 0.15 0.635 0.40
1
y
Detail F
Z L L 0.60 1.08
1.27
Rev.2.00, Oct 06, 2005 page 5 of 6
HD74HC77
JEITA Package Code P-SOP14-5.5x10.06-1.27 RENESAS Code PRSP0014DF-B Previous Code FP-14DAV MASS[Typ.] 0.23g
*1
D 8
F
NOTE) 1. DIMENSIONS"*1 (Nom)"AND"*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION"*3"DOES NOT INCLUDE TRIM OFFSET.
14
bp
HE
E
Index mark
*2
c
Reference Symbol
Dimension in Millimeters Min Nom 10.06 5.50 Max 10.5
Terminal cross section ( Ni/Pd/Au plating )
1 Z e
*3
D E A2 A1 0.00
7 bp x M L1
0.10
0.20 2.20
A bp b1 c c
1
0.34
0.40
0.46
0.15
0.20
0.25
A
HE
0 7.50 7.80 1.27
8 8.00
A1
y L
e x y
0.12 0.15 1.42 0.50
1
Detail F
Z L L 0.70 1.15
0.90
Rev.2.00, Oct 06, 2005 page 6 of 6
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