ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D
Package Options Include Plastic Shrink
Small-Outline (DL), Thin Shrink
Small-Outline (DGG), and Thin Very
Small-Outline (DGV) Packages and 380-mil
Fine-Pitch Ceramic Flat (WD) Package
Using 25-mil Center-to-Center Spacings
description
The ’AHC16374 devices are 16-bit
edge-triggered D-type flip-flops with 3-state
outputs designed specifically for driving highly
capacitive or relatively low-impedance loads.
They are particularly suitable for implementing
buffer registers, I/O ports, bidirectional bus
drivers, and working registers.
SN54AHC16374 . . . WD PACKAGE
SN74AHC16374 . . . DGG, DGV, OR DL PACKAGE
1OE
1Q1
1Q2
GND
1Q3
1Q4
V
CC
1Q5
1Q6
GND
1Q7
1Q8
2Q1
2Q2
GND
2Q3
2Q4
V
CC
2Q5
2Q6
GND
2Q7
2Q8
2OE
(TOP VIEW)
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
1CLK
1D1
1D2
GND
1D3
1D4
V
CC
1D5
1D6
GND
1D7
1D8
2D1
2D2
GND
2D3
2D4
V
CC
2D5
2D6
GND
2D7
2D8
2CLK
These devices can be used as two 8-bit flip-flops or one 16-bit flip-flop. On the positive transition of the clock
(CLK) input, the Q outputs of the flip-flop take on the logic levels at the data (D) inputs.
A buffered output-enable (OE
) input can be used to place the eight outputs in either a normal logic state (high
or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive
the bus lines significantly . The high-impedance state and the increased drive provide the capability to drive bus
lines without need for interface or pullup components.
T o ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
OE does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while
the outputs are in the high-impedance state.
The SN54AHC16374 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHC16374 is characterized for operation from –40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 2000, Texas Instruments Incorporated
1
SN54AHC16374, SN74AHC16374
16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
Stresses beyond those listed under “absolute maximum ratings” 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.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51.
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Supply voltage25.525.5V
CC
VCC = 2 V1.51.5
High-level input voltage
IH
Low-level input voltage
IL
Input voltage05.505.5V
I
Output voltage0V
O
High-level output current
Low-level output current
p
Operating free-air temperature–55125–4085°C
A
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
VCC = 3 V
VCC = 5.5 V3.853.85
VCC = 2 V0.50.5
VCC = 3 V
VCC = 5.5 V1.651.65
VCC = 2 V–50–50
VCC = 3.3 V ± 0.3 V
VCC = 5 V ± 0.5 V–8–8
VCC = 2 V5050
VCC = 3.3 V ± 0.3 V
VCC = 5 V ± 0.5 V88
VCC = 3.3 V ± 0.3 V100100
VCC = 5 V ± 0.5 V2020
2.12.1
0.90.9
CC
–4–4
44
0V
CC
V
V
V
m
A
m
A
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
SN54AHC16374, SN74AHC16374
PARAMETER
TEST CONDITIONS
V
UNIT
UNIT
UNIT
16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS330G – MARCH 1996 – REVISED JANUARY 2000
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
VI = VCC or GND0 V to 5.5 V±0.1±1*±1
VO = VCC or GND5.5 V±0.25±2.5±2.5
VI = VCC or GND,IO = 05.5 V44040
VI = VCC or GND5 V2.51010pF
VO = VCC or GND5 V3.5pF
3 V2.932.92.9
4.5 V4.44.54.44.4
2 V0.10.10.1
3 V0.10.10.1
4.5 V0.10.10.1
TA = 25°CSN54AHC16374 SN74AHC16374
MINTYPMAXMINMAXMINMAX
V
V
m
A
m
A
m
A
timing requirements over recommended operating free-air temperature range,
V
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
CC
TA = 25°CSN54AHC16374 SN74AHC16374
MINMAXMINMAXMINMAX
t
Pulse duration, CLK high or low55.55.5ns
w
t
Setup time, data before CLK↑
su
t
Hold time, data after CLK↑222ns
h
4.544ns
timing requirements over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
TA = 25°CSN54AHC16374 SN74AHC16374
MINMAXMINMAXMINMAX
t
Pulse duration, CLK high or low555ns
w
t
Setup time, data before CLK↑
su
t
Hold time, data after CLK↑222ns
h
333ns
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER
UNIT
f
MH
CLK
Q
C
15 pF
ns
OE
Q
C
pF
ns
OE
Q
C
15 pF
ns
CLK
Q
C
50 pF
ns
OE
Q
C
pF
ns
OE
Q
C
pF
ns
PARAMETER
UNIT
f
MH
CLK
Q
C
15 pF
ns
OE
Q
C
pF
ns
OE
Q
C
15 pF
ns
CLK
Q
C
50 pF
ns
OE
Q
C
pF
ns
OE
Q
C
pF
ns
SN54AHC16374, SN74AHC16374
16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS330G – MARCH 1996 – REVISED JANUARY 2000
switching characteristics over recommended operating free-air temperature range,
V
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
CC
FROMTOLOAD
(INPUT)(OUTPUT)CAPACITANCE
max
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
sk(o)
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
** On products compliant to MIL-PRF-38535, this parameter does not apply.
switching characteristics over recommended operating free-air temperature range,
V
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
CC
FROMTOLOAD
(INPUT)(OUTPUT)CAPACITANCE
max
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
sk(o)
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
** On products compliant to MIL-PRF-38535, this parameter does not apply.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
SN54AHC16374, SN74AHC16374
PARAMETER
UNIT
16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS330G – MARCH 1996 – REVISED JANUARY 2000
noise characteristics, V
V
OL(P)
V
OL(V)
V
OH(V)
V
IH(D)
V
IL(D)
NOTE 4: Characteristics are for surface-mount packages only.
Quiet output, maximum dynamic V
Quiet output, minimum dynamic V
Quiet output, minimum dynamic V
High-level dynamic input voltage3.5V
Low-level dynamic input voltage1.5V
operating characteristics, V
C
Power dissipation capacitanceNo load,f = 1 MHz32pF
pd
= 5 V, CL = 50 pF, TA = 25°C (see Note 4)
CC
OL
OL
OH
= 5 V, TA = 25°C
CC
PARAMETERTEST CONDITIONSTYPUNIT
SN74AHC16374
MINTYPMAX
0.360.8V
–0.16–0.8V
4.6V
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
From Output
Under Test
(see Note A)
SN54AHC16374, SN74AHC16374
16-BIT EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS330G – MARCH 1996 – REVISED JANUARY 2000
PARAMETER MEASUREMENT INFORMATION
V
Test
Point
C
L
From Output
Under Test
(see Note A)
C
L
RL = 1 kΩ
S1
CC
Open
GND
TESTS1
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
Open Drain
Open
V
CC
GND
V
CC
LOAD CIRCUIT FOR
TOTEM-POLE OUTPUTS
Input
VOLTAGE WAVEFORMS
Input
t
PLH
In-Phase
Output
t
PHL
Out-of-Phase
Output
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
t
w
50% V
CC
PULSE DURATION
50% V
CC
50% V
50% V
3-STATE AND OPEN-DRAIN OUTPUTS
50% V
50% V
CC
CC
LOAD CIRCUIT FOR
V
CC
CC
0 V
V
CC
CC
t
PHL
50% V
t
PLH
50% V
CC
CC
0 V
V
V
V
V
OH
OL
OH
OL
Timing Input
(see Note B)
(see Note B)
Data Input
Output
Control
Output
Waveform 1
S1 at V
CC
Output
Waveform 2
S1 at GND
50% V
CC
t
CC
CC
h
50% V
50% V
VOL + 0.3 V
VOH – 0.3 V
CC
t
t
CC
PLZ
PHZ
t
su
50% V
CC
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
50% V
CC
t
PZL
50% V
t
PZH
50% V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
V
CC
0 V
V
CC
0 V
V
CC
0 V
≈V
V
OL
V
OH
≈0 V
CC
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.
D. The outputs are measured one at a time with one input transition per measurement.
Figure 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
7
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICA TIONS USING SEMICONDUCT OR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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