MB2374 Datasheet, PDF (2/12 Pages) NXP Semiconductors – Dual octal D-type flip-flop; positive-edge trigger (3-State)

Philips Semiconductors
16-bit D-type flip-flop; positive-edge trigger (3-State)
Product specification
MB2374
FEATURES
• Two 8-bit positive edge triggered registers
• Live insertion/extraction permitted
• Power-up 3-State
• Power-up reset
• Multiple V_CC and GND pins minimize switching noise
• 3-State output buffers
• Output capability: +64mA/–32mA
• Latch-up protection exceeds 500mA per Jedec Std 17
• ESD protection exceeds 2000V per MIL STD 883 Method 3015
and 200V per Machine Model
DESCRIPTION
The MB2374 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.
The MB2374 has two 8-bit, edge triggered registers, with each
register coupled to eight 3-State output buffers. The two sections of
each register are controlled independently by the clock (nCP) and
Output Enable (nOE) control gates.
Each 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. Each
active-Low Output Enable (nOE) controls all eight 3-State buffers for
its register independent of the clock operation.
When nOE is Low, the stored data appears at the outputs for that
register. When nOE is High, the outputs for that register are in the
High-impedance “OFF” state, which means they will neither drive
nor load the bus.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
t_PLH
t_PHL
C_IN
C_OUT
I_CCZ
Propagation delay
nCP to nQx
Input capacitance
Output capacitance
Total supply current
CONDITIONS
T_amb = 25°C; GND = 0V
C_L = 50pF; V_CC = 5V
V_I = 0V or V_CC
V_O = 0V or V_CC; 3-State
Outputs disabled; V_CC = 5.5V
TYPICAL
3.4
3.6
4
7
120
UNIT
ns
pF
pF
µA
ORDERING INFORMATION
PACKAGES
52–pin plastic Quad Flat Pack
TEMPERATURE RANGE OUTSIDE NORTH AMERICA
–40°C to +85°C
MB2374 BB
NORTH AMERICA
MB2374 BB
DWG NUMBER
SOT379-1
PIN CONFIGURATION
V_CC ¹
1Q4 2
1Q5 3
È^{GND 4}
1Q6 5
1Q7 6
GND 7
2Q0 8
2Q1 9
GND 10
2Q2 11
2Q3 12
V_CC ¹³
52 51 50 49 48 47 46 45 44 43 42 41 40
39 _VCC
38 1D4
37 1D5
52-pin PQFP
È^{36 GND}
35 1D6
34 1D7
33 GND
32 2D0
31 2D1
30 GND
29 2D2
28 2D3
27 _VCC
14 15 16 17 18 19 20 21 22 23 24 25 26
PIN DESCRIPTION
PIN NUMBER
SYMBOL
44, 43, 41, 40,
38, 37, 35, 34,
32, 31, 29, 28,
26, 25, 23, 22
1D0 – 1D7
2D0 – 2D7
48, 49, 51, 52,
2, 3, 5, 6,
8, 9, 11, 12,
14, 15, 17, 18
1Q0 – 1Q7
2Q0 – 2Q7
47, 19
1OE, 2OE
45, 21
4, 7, 10, 16, 20, 24,
30, 33, 36, 42, 46, 50
1, 13, 27, 39
1CP, 2CP
GND
V_CC
FUNCTION
Data inputs
Data outputs
Output enable inputs
(active-Low)
Clock pulse inputs
(active rising edge)
Ground (0V)
Positive supply voltage
SB00062
1993 Aug 23
2
853–1625 10583